using iTextSharp.text.pdf;
using iTextSharp.text;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;
using Image = iTextSharp.text.Image;
using System.Drawing.Printing;
using Microsoft.SqlServer.Server;
using System.Reflection.Emit;

namespace CKUERA
{
    public partial class Optica : Form
    {
        public Optica()
        {
            InitializeComponent();
        }

        private void Optica_Load(object sender, EventArgs e)
        {
            panel2.Width = 831;
            panel2.Height= 628;

            panel2.Left = this.Width / 2 - panel2.Width / 2;
            panel2.Top = this.Height / 2 - panel2.Height / 2;
            Btn_Cerrar.Top = 0;
            Btn_Cerrar.Left = panel2.Width - Btn_Cerrar.Width;
            label6.Left=0; label6.Top=0;

            DataG1.Left = Txt_buscar.Left;
            DataG1.Top = Txt_buscar.Top + Txt_buscar.Height + 2;
            button1.Top = Txt_buscar.Top;
            button1.Left = Txt_buscar.Left + Txt_buscar.Width + 1;
            panel3.Top = button2.Top + button2.Height;
            panel3.Left = label4.Left;
            Btn_Guardar.BackColor = Global.ColorSistema;
            Btn_Historial.BackColor = Global.ColorSistema;
            Btn_Limpiar.BackColor = Global.ColorSistema;
            Btn_Eliminar.BackColor = Global.ColorSistema;
            Btn_Facturar.BackColor = Global.ColorSistema;
            panel1.Top = DataG1.Top;
            panel1.Left = DataG1.Left;
            panel1.Width = label4.Width;//DataG1.Width;
            label19.Text = "Entrega " + Global.SIMB_;

            BackColor= Global.ColorSistema;

            panel5.Top = 0;
            panel5.Left = 0;
            panel5.Height = this.Height;
            panel5.Width = this.Width;



            Licencia();
        }

        private void Txt_buscar_TextChanged(object sender, EventArgs e)
        {
            Txt_buscar.ForeColor = Color.Black;
            dataLista.Rows.Clear();
            num_pedido = "";

            //CONSULTA LA TABLA CLIENTES
            this.Cursor = Cursors.WaitCursor;
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/clientes_listar.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼", Txt_buscar.Text));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();

            string resultado = devuelve.ToUpper();
            bool re;
            re = resultado.Contains("<BR");
            if (re == true)
            {
                MessageBox.Show(devuelve);
                return;
            }

            if (devuelve.Trim() == "")
            {
                DataG1.Visible = false;
            }
            else
            {
                DataG1.Rows.Clear();
                DataG1.Visible = true;

                foreach (var line in devuelve.Trim().Split('↔'))
                {
                    var valores = line.Split('▲');

                    if (valores[0].Trim() != "")
                    {
                        DataG1.Rows.Add(valores[0], valores[1]);
                    }
                }
            }

            if (Txt_buscar.Text == "")
            {
                DataG1.Visible = false;
            }
            this.Cursor = Cursors.Default;
        }

        private void DataG1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {

        }

        private void DataG1_Click(object sender, EventArgs e)
        {
            ID_LABEL.Text = DataG1.CurrentRow.Cells[0].Value.ToString();

            //MOSTRAR CLIENTES
            this.Cursor = Cursors.WaitCursor;
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/clientes_muestra.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼", ID_LABEL.Text));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();
            string[] c = devuelve.Trim().Split('▲');
            this.Cursor = Cursors.Default;

            string resultado = devuelve.ToUpper();
            bool re;
            re = resultado.Contains("<BR");
            if (re == true)
            {
                MessageBox.Show(devuelve);
                return;
            }

            if (devuelve != "")
            {
                foreach (var line in devuelve.Trim().Split('↔'))
                {
                    var v = line.Split('▲');
                    if (v[0] != "")
                    {
                        Txt_nombre.Text = v[0];
                        Txt_doc.Text = v[1];
                        Txt_tel.Text = v[2];
                        lb_dir.Text = v[3];
                        DataG1.Visible = false;
                        Txt_buscar.Text = "";
                        Txt_bus_art.Select();
                    }
                }
            }
   
            if (Ch_Consultar.Checked == true)
            {
                int Facturado = 0;
                if(Ch_Facturados.Checked == true) { Facturado = 1; }
                this.Cursor = Cursors.WaitCursor;
                HttpWebRequest rq2 = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_mostrar.php");
                rq2.Method = "POST";
                byte[] byteArray2 = Encoding.UTF8.GetBytes(string.Format("nu={0}▼{1}▼{2}▼", ID_LABEL.Text,"0",Facturado));
                rq2.ContentType = "application/x-www-form-urlencoded";
                rq2.ContentLength = byteArray2.Length;
                Stream stream2 = rq2.GetRequestStream();
                stream2.Write(byteArray2, 0, byteArray2.Length);
                stream2.Close();
                //
                WebResponse response2 = rq2.GetResponse();
                stream2 = response2.GetResponseStream();
                StreamReader reader2 = new StreamReader(stream2);
                string devuelve2 = reader2.ReadToEnd();
                reader2.Close();
                stream2.Close();
                response2.Close();
                string[] c2 = devuelve2.Split('▲');
                this.Cursor = Cursors.Default;

                string resultado2 = devuelve2.ToUpper();
                bool re2;
                re2 = resultado2.Contains("ERROR");
                if (re2 == true)
                {
                    MessageBox.Show(devuelve2);
                    return;
                }

                if (devuelve2 != "")
                {
                    panel1.Visible = true;
                    dataGpedidos.Rows.Clear();

                    foreach (var line2 in devuelve2.Trim().Split('↔'))
                    {
                        var v2 = line2.Split('▲');
                        if (v2[0] != "")
                        {
                            double ST = double.Parse(v2[7]) * double.Parse(v2[17]);
                            dataGpedidos.Rows.Add(v2[2],//NUM PEDIDO
                                               v2[3],//FECHA OPER
                                               v2[4],//FECHA ENTREGA
                                              v2[33] //OBS
                            );
                        }
                    }
                }
                else//SI NO HAY PEDIDO DE ESTE CLIENTE, PREPARA PARA REGISTRAR NUEVO
                {
                    Fecha_Entrga.Enabled = true;
                    return;
                }
            }
            else//SI NO HAY PEDIDO DE ESTE CLIENTE, PREPARA PARA REGISTRAR NUEVO
            {
                Fecha_Entrga.Enabled = true;
                return;
            }
        }

        private void Cargar_Pedidos()
        {
            panel1.Visible = false;

            int Facturado = 0;
            if (Ch_Facturados.Checked == true) { Facturado = 1; }

            this.Cursor = Cursors.WaitCursor;
            HttpWebRequest rq2 = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_mostrar.php");
            rq2.Method = "POST";
            byte[] byteArray2 = Encoding.UTF8.GetBytes(string.Format("nu={0}▼{1}▼{2}", "0", dataGpedidos.CurrentRow.Cells[0].Value.ToString(), Facturado));//Enviar Num de pedido
            rq2.ContentType = "application/x-www-form-urlencoded";
            rq2.ContentLength = byteArray2.Length;
            Stream stream2 = rq2.GetRequestStream();
            stream2.Write(byteArray2, 0, byteArray2.Length);
            stream2.Close();
            //
            WebResponse response2 = rq2.GetResponse();
            stream2 = response2.GetResponseStream();
            StreamReader reader2 = new StreamReader(stream2);
            string devuelve2 = reader2.ReadToEnd();
            reader2.Close();
            stream2.Close();
            response2.Close();
            string[] c2 = devuelve2.Split('▲');
            this.Cursor = Cursors.Default;

            string resultado2 = devuelve2.ToUpper();
            bool re2;
            re2 = resultado2.Contains("<BR />");
            if (re2 == true)
            {
                MessageBox.Show(devuelve2);
                return;
            }

            if (devuelve2 != "")
            {
                dataLista.Rows.Clear();

                double ST = 0;
                t = 0;
                Lb_Total.Text = "0";

                foreach (var line2 in devuelve2.Trim().Split('↔'))
                {
                    var v2 = line2.Split('▲');
                    if (v2[0] != "")
                    {
                        Fecha_Entrga.Enabled = false;

                        ST = double.Parse(v2[7]) * double.Parse(v2[17]);
                        dataLista.Rows.Add(v2[0],//ID
                                           v2[6],//CODIGO
                                           v2[7],//CANT
                                           v2[8],//DESCRIP
                                           v2[6],//COMPRA
                                           v2[10],//PROVEE
                                           v2[11],//SECC
                                           v2[12],//SUBSECC
                                           v2[13],//IVA
                                           v2[14],//MODELO
                                           v2[15],//CALIBRE
                                           v2[16],//COLOR
        double.Parse(v2[17]).ToString("#,##0.##"),//PRECIO
                          ST.ToString("#,##0.##"),//SUBTOTAL
                                num_pedido= v2[2],//Num_Pedido
                             Fecha_op.Text= v2[3],//FECHA OPERACIÓN
                        Fecha_Entrga.Text = v2[4],//FECHA ENTREGA
                             Txt_DR.Text = v2[18],//DR.
                          Txt_D_ESF.Text = v2[19],//D_ESF
                          Txt_D_CIL.Text = v2[20],
                          Txt_D_EJE.Text = v2[21],
                          Txt_D_ADD.Text = v2[22],
                            Txt_D_D.Text = v2[23],
                          Txt_I_ESF.Text = v2[24],//I_ESF
                          Txt_I_CIL.Text = v2[25],
                          Txt_I_EJE.Text = v2[26],
                          Txt_I_ADD.Text = v2[27],
                            Txt_I_D.Text = v2[28],
                           Txt_TIPO.Text = v2[29],
                          Txt_COLOR.Text = v2[30],
                       Txt_ALTURA_B.Text = v2[31],
                       Txt_ALTURA_M.Text = v2[32],
                            Txt_OBS.Text = v2[33],
                                  Estado = v2[34],
                        Txt_Entrega.Text = double.Parse(v2[35]).ToString("0.##"),
                          Txt_D_ESFX.Text = v2[35],//D_ESF
                          Txt_D_CILX.Text = v2[36],
                          Txt_D_EJEX.Text = v2[37],
                          Txt_D_ADDX.Text = v2[38],
                            Txt_D_DX.Text = v2[39],
                          Txt_I_ESFX.Text = v2[40],//I_ESF
                          Txt_I_CILX.Text = v2[41],
                          Txt_I_EJEX.Text = v2[42],
                          Txt_I_ADDX.Text = v2[43],
                            Txt_I_DX.Text = v2[44]
                        );

                        t = ST + t;
                        //Lb_Total.Text = t.ToString("#,##0.##");
                    }
                }

                Lb_Total.Text = "Total " + Global.SIMB_ + " " + t.ToString("#,##0.##");
                Saldo();//Lb_Saldo.Text = "Saldo " + Global.SIMB_ + " " + (t-double.Parse(Txt_Entrega.Text)).ToString("#,##0.##");
                Btn_Facturar.Enabled = true;
                Btn_Guardar.Enabled = true;
                Btn_Eliminar.Enabled = true;
                Txt_Entrega.Enabled = false;
                Txt_buscar.Enabled = false;
            }
        }

        double t=0;

        private void Saldo()
        {
            try
            {
                Lb_Saldo.Text = "Saldo " + Global.SIMB_ + " " + (t - double.Parse(Txt_Entrega.Text)).ToString("#,##0.##");
            }
            catch
            {
                Lb_Saldo.Text = "Saldo " + Global.SIMB_ + " ";
            }
        }

        string Estado="0";

        private void Txt_bus_art_TextChanged(object sender, EventArgs e)
        {
            if (Txt_bus_art.TextLength > 0)
            {
                label4.BackColor = System.Drawing.Color.SeaGreen;
                Txt_ayuda.BackColor = System.Drawing.Color.SeaGreen;
            }
            else 
            { label4.BackColor = System.Drawing.Color.Silver; }
            button2.BackColor = label4.BackColor;
            Txt_ayuda.BackColor = label4.BackColor;

            //CARACTERES PERMITIDOS
            if (System.Text.RegularExpressions.Regex.IsMatch(Txt_bus_art.Text, "[^a-zA-Z0-9-/_() .+:%áéíóúÁÉÍÓÚ`]")) { Txt_bus_art.Text = ""; return; }

            dataProd.Rows.Clear();

            string filtro = Txt_bus_art.Text;                                                        //cons_temp_usu.php
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/consultar_precios.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼{1}▼{2}", filtro, Global.num_esta, Global.ConSuc));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();

            string resultado = devuelve.ToUpper();
            bool re;
            re = resultado.Contains("<BR");
            if (re == true)
            {
                MessageBox.Show(devuelve);
                return;
            }

            string modelo="X", calibre="X", color="X";


            foreach (var line in devuelve.Split('↔'))
            {
                if (string.IsNullOrWhiteSpace(line))
                    continue;
                var v = line.Split('▲');

                string preciox = string.Format("{0:#,##0.##}", double.Parse(v[4].ToString()));

                if (string.IsNullOrWhiteSpace(v[9]))
                    continue;
                var o = v[9].Split(',');//DIVIDE OTRO EN 3 PARTES

                try
                {
                    modelo = o[0].Trim(); calibre = o[1].Trim(); color = o[2].Trim();
                }
                catch { modelo = "X"; calibre = "X"; color = "X"; }

                dataProd.Rows.Add(v[0],//ID
                                  v[2],//CODIGO 
                                  v[1],//DESCRIP
                                modelo,//MODELO
                               calibre,//CALIBRE
                                 color,//COLOR
                               preciox,//PRECIO
                    double.Parse(v[5]),//STOCK
                                  v[6],//SECC
                                  v[7],//SUBSECC 
                                 v[10],//PROVEE
                                  v[3],//COMPRA
                                 v[11] //IVA
                                 );
            }

            if (devuelve != "")
            {
                panel3.Visible = true;
            }
            else { panel3.Visible = false; }

            if(Txt_bus_art.Text=="") { panel3.Visible = false; }
        }

        private void labelCerrar_Click(object sender, EventArgs e)
        {
            panel3.Visible=false;
            Txt_bus_art.Text = "";
        }

        private void dataProd_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {

        }

        private void dataProd_Click(object sender, EventArgs e)
        {
            if (ID_LABEL.Text == "")
            {
                MessageBox.Show("Seleccione un cliente primeramente y luego continúe.");
                return;
            }

            //VERIFICAR SI YA EXISTE
            foreach (DataGridViewRow dgvRenglon in dataLista.Rows)
            {
                if(dgvRenglon.Cells[1].Value.ToString() == dataProd.CurrentRow.Cells[1].Value.ToString()){
                    MessageBox.Show("\"" + dataLista.CurrentRow.Cells[3].Value.ToString() + "\" ya existe. Si desea puede modificar la cantidad.","ATENCIÓN",MessageBoxButtons.OK,MessageBoxIcon.Information);
                    panel3.Visible = false;
                    Txt_bus_art.Text = "";
                    Txt_bus_art.Select();
                    return;
                }
            }

            //AGREGAR A LA LISTA
            dataLista.Rows.Add("", dataProd.CurrentRow.Cells[1].Value.ToString(),//CODIGO
                                                         "1", //CANT
                dataProd.CurrentRow.Cells[2].Value.ToString(),//DESCRIP 
                dataProd.CurrentRow.Cells[11].Value.ToString(),//COMPRA
                dataProd.CurrentRow.Cells[10].Value.ToString(),//PROVEE
                dataProd.CurrentRow.Cells[8].Value.ToString(),//SECC
                dataProd.CurrentRow.Cells[9].Value.ToString(),//SUBSECC
                dataProd.CurrentRow.Cells[12].Value.ToString(),//IVA
                dataProd.CurrentRow.Cells[3].Value.ToString(),//MODELO
                dataProd.CurrentRow.Cells[4].Value.ToString(),//CALIBRE
                dataProd.CurrentRow.Cells[5].Value.ToString(),//COLOR
                dataProd.CurrentRow.Cells[6].Value.ToString(),//PRECIO
                dataProd.CurrentRow.Cells[6].Value.ToString()//SUBTOTAL
                );
            if(dataLista.Rows.Count > 0) { Btn_Guardar.Enabled = true; } else { Btn_Guardar.Enabled = false; }
            Txt_bus_art.Text = "";
            Txt_bus_art.Select();

            Sumar_dataLista();
            Saldo();
        }

        private void Sumar_dataLista()
        {
            double Suma = 0;
            foreach (DataGridViewRow row in dataLista.Rows)
            {
                Suma = Suma + double.Parse(row.Cells[13].Value.ToString());
            }

            Lb_Total.Text = "Total " + Global.SIMB_ + " " + Suma.ToString("#,##0.##");
            t= Suma;
        }

        private void dataLista_CellEndEdit(object sender, DataGridViewCellEventArgs e)
        {
            double Cant = 0;

            foreach (DataGridViewRow dgvRenglon in dataLista.Rows)
            {
                
                try
                {
                    Cant = double.Parse(dgvRenglon.Cells[2].Value.ToString());
                }
                catch 
                {
                    MessageBox.Show("Escriba en Número, por favor.","CUIDADO",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
                    dgvRenglon.Cells[2].Value = "1"; 
                }
 
                double a = double.Parse(dgvRenglon.Cells[12].Value.ToString()) * Cant;
                dgvRenglon.Cells[13].Value = a.ToString("#,##0.##");
            }

            Sumar_dataLista();
            Saldo();
        }

        private void dataLista_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                dataLista.Rows.RemoveAt(dataLista.CurrentRow.Index);
            }
        }

        static string num_pedido="";

        private void Btn_Guardar_Click(object sender, EventArgs e)
        {
            if (ID_LABEL.Text == "") { MessageBox.Show("Falta un cliente. Seleccione uno.", "ATENCIÓN", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; }

            if (dataLista.Rows.Count < 1) { MessageBox.Show("No hay artículos para guardar.", "ATENCIÓN", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; }

            if (DateTime.Now.ToString("dd/MM/yyyy") == string.Format("{0:dd/MM/yyyy}",DateTime.Parse(Fecha_Entrga.Text)))
            {
                if (Fecha_Entrga.Enabled == true)
                {
                    DialogResult result = MessageBox.Show("¿Confirma que realmente la fecha de entrega es hoy?", "¿ESTÁ SEGURO/A?", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                    if (result == DialogResult.No)
                        return;
                }
            }

            string Fe = string.Format("{0:yyyyMMdd}", DateTime.Parse(Fecha_Entrga.Text)); //11/10/2022
            string Fh = DateTime.Now.ToString("yyyyMMdd"); //11/10/2022

            if (double.Parse(Fe)< double.Parse(Fh))
            {
                MessageBox.Show("Escriba una fecha superior a la de hoy.", "ATENCIÓN", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                return;
            }

            if (Txt_DR.Text == "") { MessageBox.Show("Escriba un Doctor para continuar.","ATENCIÓN",MessageBoxButtons.OK,MessageBoxIcon.Exclamation); Txt_DR.Select(); return; }

            Txt_DR.Text = Txt_DR.Text.ToUpper();

            if (Txt_D_ESF.Text == "") Txt_D_ESF.Text ="X";
            if (Txt_D_CIL.Text == "") Txt_D_CIL.Text = "X";
            if(Txt_D_EJE.Text == "") Txt_D_EJE.Text = "X";
            if (Txt_D_ADD.Text == "") Txt_D_ADD.Text = "X";
            if (Txt_I_ESF.Text == "") Txt_I_ESF.Text = "X";
            if (Txt_I_CIL.Text == "") Txt_I_CIL.Text = "X";
            if (Txt_I_EJE.Text == "") Txt_I_EJE.Text = "X";
            if (Txt_I_ADD.Text == "") Txt_I_ADD.Text = "X";
            if (Txt_I_D.Text == "") Txt_I_D.Text = "X";

            if (Txt_D_ESFX.Text == "") Txt_D_ESFX.Text = "X";
            if (Txt_D_CILX.Text == "") Txt_D_CILX.Text = "X";
            if (Txt_D_EJEX.Text == "") Txt_D_EJEX.Text = "X";
            if (Txt_D_ADDX.Text == "") Txt_D_ADDX.Text = "X";
            if (Txt_I_ESFX.Text == "") Txt_I_ESFX.Text = "X";
            if (Txt_I_CILX.Text == "") Txt_I_CILX.Text = "X";
            if (Txt_I_EJEX.Text == "") Txt_I_EJEX.Text = "X";
            if (Txt_I_ADDX.Text == "") Txt_I_ADDX.Text = "X";
            if (Txt_I_DX.Text == "") Txt_I_DX.Text = "X";

            if (Txt_TIPO.Text == "") Txt_TIPO.Text = "X";
            if(Txt_COLOR.Text == "") Txt_COLOR.Text = "X";
            if (Txt_ALTURA_B.Text == "") Txt_ALTURA_B.Text = "X";
            if (Txt_ALTURA_M.Text == "") Txt_ALTURA_M.Text = "X";
            if (Txt_OBS.Text == "") Txt_OBS.Text = "NO HAY.";

            string mje ="";

            if (num_pedido == "") 
            { 
                num_pedido = DateTime.Now.ToString("yyMMddHHmmss"); 
            }
            else
            {
                Eiliminar_Serv(0);
            }

            string fecha_op = string.Format("{0:yyyy-MM-dd}", DateTime.Parse(Fecha_Entrga.Text));


            string fecha_ent = string.Format("{0:yyyy-MM-dd}", DateTime.Parse(Fecha_Entrga.Text));

            Txt_OBS.Text = Txt_OBS.Text.Replace("'", "´");//20/10/2022
            if (Txt_OBS.Text == "") { Txt_OBS.Text = " "; }
            try
            {
                double.Parse(Txt_Entrega.Text);
            }
            catch
            {
                Txt_Entrega.Text = "";
                Txt_Entrega.Select();
                return;
            }

            string cabecera = Global.Nom_EMPRESA + "\n" +
                  Global.Direc_EMPRESA + "\n" +
                  Global.Tel_EMPRESA + "\n" + "\n";

            Global.T_Construido = "FECHA:" + fecha_op + ", " + DateTime.Now.ToString("HH:mm:ss") + " \n" +
            "PEDIDO No.: " + num_pedido + "\n" +
            "CONFECCIONADO POR: " + Global.USUARIO_SIST + "\n" +
            "FECHA DE ENTREGA:" + fecha_ent + "\n" +
            "CLIENTE: " + Txt_nombre.Text + "\n" +
            "RUC O CI: " + Txt_doc.Text + "\n" +
            "TELEFONO: " + Txt_tel.Text + "\n\n" +
            "***DETALLE DEL PEDIDO***"
            ;

            foreach (DataGridViewRow dgvRenglon in dataLista.Rows)
            {
                mje = mje + "↔" 
                    + Global.USUARIO_SIST 
                    + "▲" + num_pedido 
                    + "▲" + fecha_op 
                    + "▲" + fecha_ent
                    + "▲" + ID_LABEL.Text
                    + "▲" + dgvRenglon.Cells[1].Value.ToString()//CODIGO
                    + "▲" + dgvRenglon.Cells[2].Value.ToString()//CANT
                    + "▲" + dgvRenglon.Cells[3].Value.ToString()//DESCRIP
                    + "▲" + dgvRenglon.Cells[4].Value.ToString()//COMPRA
                    + "▲" + dgvRenglon.Cells[9].Value.ToString()//MODELO
                    + "▲" + dgvRenglon.Cells[10].Value.ToString()//CALIBRE
                    + "▲" + dgvRenglon.Cells[11].Value.ToString()//COLOR
                    + "▲" + double.Parse(dgvRenglon.Cells[12].Value.ToString())//PRECIO
                    + "▲" + dgvRenglon.Cells[5].Value.ToString()//PROVEE
                    + "▲" + dgvRenglon.Cells[6].Value.ToString()//SECC
                    + "▲" + dgvRenglon.Cells[7].Value.ToString()//SUBSECC
                    + "▲" + dgvRenglon.Cells[8].Value.ToString()//IVA
                    + "▲" + Txt_DR.Text//Doctor
                    + "▲" + Txt_D_ESF.Text//OJO DERECHO
                    + "▲" + Txt_D_CIL.Text
                    + "▲" + Txt_D_EJE.Text
                    + "▲" + Txt_D_ADD.Text
                    + "▲" + Txt_D_D.Text
                    + "▲" + Txt_I_ESF.Text//OJO IZQUIERDO
                    + "▲" + Txt_I_CIL.Text
                    + "▲" + Txt_I_EJE.Text
                    + "▲" + Txt_I_ADD.Text
                    + "▲" + Txt_I_D.Text
                    + "▲" + Txt_TIPO.Text
                    + "▲" + Txt_COLOR.Text
                    + "▲" + Txt_ALTURA_B.Text
                    + "▲" + Txt_ALTURA_M.Text
                    + "▲" + Txt_OBS.Text.ToUpper()
                    + "▲" + Estado
                    + "▲" + Txt_Entrega.Text
                    + "▲" + Txt_D_ESFX.Text//OJO DERECHO
                    + "▲" + Txt_D_CILX.Text
                    + "▲" + Txt_D_EJEX.Text
                    + "▲" + Txt_D_ADDX.Text
                    + "▲" + Txt_D_DX.Text
                    + "▲" + Txt_I_ESFX.Text//OJO IZQUIERDO
                    + "▲" + Txt_I_CILX.Text
                    + "▲" + Txt_I_EJEX.Text
                    + "▲" + Txt_I_ADDX.Text
                    + "▲" + Txt_I_DX.Text
                    ;//FIN

                Global.T_Construido = Global.T_Construido + "\n\n" +
                    "CANTIDAD: " + double.Parse(dgvRenglon.Cells[2].Value.ToString()).ToString("0") + "\n" + 
                    "DESCRIPCION: " + dgvRenglon.Cells[3].Value.ToString() + "\n" +
                    "MODELO: " + dgvRenglon.Cells[9].Value.ToString() + "\n" +
                    "CALIBRE: " + dgvRenglon.Cells[10].Value.ToString() + "\n" +
                    "COLOR: " + dgvRenglon.Cells[11].Value.ToString() + "\n"
                    ;
            }

             Global.T_Construido = Global.T_Construido + "\n" +
             Lb_Total.Text.ToUpper() + "\n" +
             "ENTREGA: " + Global.SIMB_ + " " + Txt_Entrega.Text + "\n" +
             Lb_Saldo.Text.ToUpper() + "\n\n" +
             "OBSERVACION: " + Txt_OBS.Text.ToUpper() + "\n" +
             "\n\n\n\n\n\n\n\n\n\n" +
             cabecera;
            ;

            this.Cursor = Cursors.WaitCursor;
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_guardar.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}↔", mje));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();
            string[] c = devuelve.Split('▲');
            this.Cursor = Cursors.Default;

            if (c[0].Length > 100)
            {
                MessageBox.Show(devuelve);
                return;
            }

            Entrega();

            PrintTicket();
            cabecera = "";
            Global.T_Construido = "";

            MessageBox.Show("El pedido se guardó.", "ÉXITO", MessageBoxButtons.OK, MessageBoxIcon.Information);

            Btn_Limpiar_Click(null, null);
        }

        public void PrintTicket()
        {
            printDocument1 = new System.Drawing.Printing.PrintDocument();
            PrinterSettings ps = new PrinterSettings();
            printDocument1.PrinterSettings = ps;
            printDocument1.PrintPage += Imprimir;
            printDocument1.Print();
        }

        private void Imprimir(object sender, PrintPageEventArgs e)
        {
            System.Drawing.Font font = new System.Drawing.Font("Lucida Console", 9);
            int ancho = 700;
            int y = 20;
            int alto = 12;

            string s;
            string[] rows;
            s = Global.T_Construido;
            rows = s.Split('\n');

            int v = 0;

            while (v < rows.GetUpperBound(0))
            {
                e.Graphics.DrawString(rows[v].ToString(), font, Brushes.Black, new RectangleF(0, y += 15, ancho, alto));
                v = v + 1;
            }
        }

        private void Imprimir_PDF()
        {
            //CREAR PDF
            string pdfgenerate = "\\DOC_PDF\\OPTICA\\" + "ELNOMBRE" + ".pdf";
            Document oDoc;
            PdfWriter pdfw;
            PdfContentByte cb;
            float top1;

            //PREPARA EL PDF
            oDoc = new Document(PageSize.A4, 30, 20, 20, 20);
            pdfw = PdfWriter.GetInstance(oDoc, new FileStream(pdfgenerate, FileMode.Create, FileAccess.Write, FileShare.None));
            pdfw.CompressionLevel = PdfStream.BEST_COMPRESSION;
            pdfw.SetFullCompression();
            oDoc.Open();
            oDoc.NewPage();
            top1 = oDoc.PageSize.Top;

            try
            {
                //ENCABEZADO LOGO (usado en reportes)
                Image logo = Image.GetInstance("logo.png", true);
                logo.CompressionLevel = PdfStream.NO_COMPRESSION;
                //logo.SetAbsolutePosition(60, top1 - 130);
                oDoc.Add(logo);
            }
            catch (Exception)
            {

            }

            cb = pdfw.DirectContent;//DEBE IR ANTES DE LAS LÍNEAS DE TEXTO

            //EL TÍTULO
            Paragraph title = new Paragraph();
            title.Font = FontFactory.GetFont(FontFactory.TIMES, 10f, BaseColor.BLACK);

            title.Add("REPORTE Ventas, Vendedor: " + Global.Vendedor + ", DOC: " + Global.DOC + ", Comisión " + Global.ComiVen + "%.\nDesde el " + string.Format("{0:dd-MM-yyyy}", DateTime.Parse(Global.fecha_desdex)) + ", hasta el " + string.Format("{0:dd-MM-yyyy}", DateTime.Parse(Global.fecha_hastax)) +
            "\nGenerado por " + Global.USUARIO_SIST + " - Terminal " + Global.NUM_caja + " - Fecha: " + DateTime.Now.ToString());

            title.Alignment = Element.ALIGN_LEFT;
            oDoc.Add(title);

            PdfPTable table = new PdfPTable(8);//TABLA CON 6 CELDAS

            //TEXTO QUE IRÁ DENTRO DE LA TABLA DEL ENCABEZADO
            Paragraph TEXTO_T0 = new Paragraph();
            TEXTO_T0.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
            TEXTO_T0.Add("COMPROBANTE");

            Paragraph TEXTO_T1 = new Paragraph();
            TEXTO_T1.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
            TEXTO_T1.Add("FECHA");

            Paragraph TEXTO_T2 = new Paragraph();
            TEXTO_T2.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
            TEXTO_T2.Add("HORA");

            Paragraph TEXTO_T3 = new Paragraph();
            TEXTO_T3.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
            TEXTO_T3.Add("DESCRIPCION");

            Paragraph TEXTO_CANT = new Paragraph();
            TEXTO_CANT.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
            TEXTO_CANT.Add("CANT");

            Phrase TEXTO_PRECIO = new Phrase("PRECIO", FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
            PdfPCell PRECIO = new PdfPCell(TEXTO_PRECIO);
            PRECIO.HorizontalAlignment = Element.ALIGN_RIGHT;
            PRECIO.BackgroundColor = new BaseColor(224, 255, 255);

            Phrase Titulo4 = new Phrase("MONTO", FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
            PdfPCell TEXTO_T4 = new PdfPCell(Titulo4);
            TEXTO_T4.HorizontalAlignment = Element.ALIGN_RIGHT;
            TEXTO_T4.BackgroundColor = new BaseColor(224, 255, 255);

            Phrase Titulo5 = new Phrase("USUARIO", FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
            PdfPCell TEXTO_T5 = new PdfPCell(Titulo5);
            TEXTO_T5.HorizontalAlignment = Element.ALIGN_RIGHT;
            TEXTO_T5.BackgroundColor = new BaseColor(224, 255, 255);

            table.HorizontalAlignment = 0;
            table.TotalWidth = 545f;//MEDIDA TOTAL DE LA TABLA
            table.LockedWidth = true;
            float[] widths = new float[] { 75f, 50f, 30f, 200f, 30f, 55f, 55f, 50f };//MEDIDAS DE COLUMNAS
            table.SetWidths(widths);

            //table.WidthPercentage = 100;
            table.DefaultCell.BackgroundColor = new BaseColor(224, 255, 255);
            table.DefaultCell.BorderColor = new BaseColor(0, 0, 0);//125,125,255
            table.AddCell(TEXTO_T0); table.AddCell(TEXTO_T1); table.AddCell(TEXTO_T2);
            table.AddCell(TEXTO_T3); table.AddCell(TEXTO_CANT); table.AddCell(TEXTO_PRECIO); table.AddCell(TEXTO_T4); table.AddCell(TEXTO_T5);

            table.DefaultCell.BackgroundColor = new BaseColor(255, 255, 255);

            //SQLiteDataReader RS = null;
            //string POR_OPER = "SELECT NUM_FACT,FECHA,HORA,DESCRIPCION,SUM(VENTA*CANT) MONTO,USUARIO FROM ventas WHERE FECHA>= '" + Global.fecha_desdex + "' AND FECHA<= '" + Global.fecha_hastax + "' AND id_vendedor= " + Global.ID_vendedor + " GROUP BY NUM_FACT,FECHA,HORA,DESCRIPCION,USUARIO;";
            //SQLiteCommand CMD_POR_OPER = new SQLiteCommand(POR_OPER, Global.conexion);
            //RS = CMD_POR_OPER.ExecuteReader();

            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/vendedores_reportar.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼{1}▼{2}", Global.fecha_desdex, Global.fecha_hastax, Global.ID_vendedor));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();

            string resultado = devuelve.ToUpper();
            bool re;
            re = resultado.Contains("<BR");
            if (re == true)
            {
                MessageBox.Show(devuelve);
                //return;
            }

            if (devuelve != "")
            {
                //TEXTO QUE IRÁ DENTRO DE LA TABLA DEL CUERPO
                foreach (var line in devuelve.Trim().Split('↔'))//cada línea se separa por '↔'
                {
                    if (line == "") continue;//si la última línea está vacía, continua al siguiente proceso
                    var v = line.Trim().Split('▲');//dentro de cada línea se separa por columna ('▲')
                                                   //DataG1.Rows.Add(v[0], v[1]);

                    // string fechas =
                    Paragraph factura = new Paragraph();
                    factura.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
                    factura.Add(v[0]);

                    Paragraph fecha = new Paragraph();
                    fecha.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
                    fecha.Add(string.Format("{0:dd-MM-yyyy}", DateTime.Parse(v[1])));

                    Paragraph hora = new Paragraph();
                    hora.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
                    hora.Add(string.Format("{0:HH:mm}", DateTime.Parse(v[2])));

                    Paragraph descrip = new Paragraph();
                    descrip.Font = FontFactory.GetFont(FontFactory.TIMES, 9f, BaseColor.BLACK);
                    descrip.Add(v[3]);

                    Phrase CANTIDAD = new Phrase(string.Format("{0:0.##}", double.Parse(v[6])), FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
                    PdfPCell CANT = new PdfPCell(CANTIDAD);
                    CANT.HorizontalAlignment = Element.ALIGN_RIGHT;
                    CANT.BackgroundColor = new BaseColor(255, 255, 255);
                    CANT.BorderColor = new BaseColor(211, 211, 211);//125,125,255

                    Phrase PRECIOS = new Phrase(string.Format("{0:#,##0.##}", double.Parse(v[4])), FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
                    PdfPCell PRE = new PdfPCell(PRECIOS);
                    PRE.HorizontalAlignment = Element.ALIGN_RIGHT;
                    PRE.BackgroundColor = new BaseColor(255, 255, 255);
                    PRE.BorderColor = new BaseColor(211, 211, 211);//125,125,255

                    double MONTOT = double.Parse(v[4]) * double.Parse(v[6]);

                    Phrase Conte4 = new Phrase(string.Format("{0:#,##0.##}", MONTOT), FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
                    PdfPCell montoG = new PdfPCell(Conte4);
                    montoG.HorizontalAlignment = Element.ALIGN_RIGHT;
                    montoG.BackgroundColor = new BaseColor(255, 255, 255);
                    montoG.BorderColor = new BaseColor(211, 211, 211);//125,125,255

                    Phrase Conte6 = new Phrase(v[5], FontFactory.GetFont(FontFactory.TIMES, 9, BaseColor.BLACK));
                    PdfPCell oper = new PdfPCell(Conte6);
                    oper.HorizontalAlignment = Element.ALIGN_RIGHT;
                    oper.BackgroundColor = new BaseColor(255, 255, 255);
                    oper.BorderColor = new BaseColor(211, 211, 211);//125,125,255

                    //table.WidthPercentage = 100;
                    table.DefaultCell.BorderColor = new BaseColor(211, 211, 211);//125,125,255
                    table.AddCell(factura); table.AddCell(fecha); table.AddCell(hora);
                    table.AddCell(descrip); table.AddCell(CANT); table.AddCell(PRE); table.AddCell(montoG); table.AddCell(oper);

                    Global.TotalRp = Global.TotalRp + double.Parse(v[4]) * double.Parse(v[6]);
                }
            }
        }

        private void Eiliminar_Serv(int Delete)
        {
            this.Cursor = Cursors.WaitCursor;
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_delete_ped.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼", num_pedido));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();
            string[] c = devuelve.Split('▲');
            this.Cursor = Cursors.Default;

            if (c[0].Length > 100)
            {
                MessageBox.Show(devuelve);
                return;
            }

            if (Delete == 1) { MessageBox.Show(devuelve,"ÉXITO",MessageBoxButtons.OK,MessageBoxIcon.Information); }
        }

        private void label16_Click(object sender, EventArgs e)
        {
            dataGpedidos.Rows.Clear();
            panel1.Visible = false;
        }

        private void dataGpedidos_Click(object sender, EventArgs e)
        {
            Cargar_Pedidos();
        }

        private void Txt_buscar_Leave(object sender, EventArgs e)
        {
            Txt_buscar.ForeColor = Color.Gray;
        }

        private void Txt_buscar_Enter(object sender, EventArgs e)
        {
            if (Txt_buscar.Text == "Escriba aquí")
            {
                Txt_buscar.Text = "";
            }
            Txt_buscar.ForeColor = Color.Black;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Txt_buscar.Select();
        }

        private void Ch_Consultar_CheckedChanged(object sender, EventArgs e)
        {
            if (Ch_Consultar.Checked == false)
            {
                Ch_Facturados.Checked = false;
            }

            Txt_buscar.Select();
            //num_pedido = "";
        }

        private void dataGpedidos_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {

        }

        private void Btn_Limpiar_Click(object sender, EventArgs e)
        {
            Txt_buscar.Text = ".";
            Txt_buscar.Text = "";
            Txt_nombre.Text = "";
            Txt_doc.Text = "";
            Txt_tel.Text = "";
            lb_dir.Text = "";
            ID_LABEL.Text = "";
            Txt_DR.Text = "";
            Txt_D_ADD.Text = "";
            Txt_D_CIL.Text = "";
            Txt_D_D.Text = "";
            Txt_D_EJE.Text = "";
            Txt_D_ESF.Text = "";
            Txt_I_ADD.Text = "";
            Txt_I_CIL.Text = "";
            Txt_I_D.Text = "";
            Txt_I_EJE.Text = "";
            Txt_I_ESF.Text = "";
            Txt_I_ESF.Text = "";
            Txt_TIPO.Text = "";
            Txt_COLOR.Text = "";
            Txt_ALTURA_B.Text = "";
            Txt_ALTURA_M.Text = "";
            Txt_OBS.Text = "";
            Lb_Total.Text = "";
            Lb_Saldo.Text = "";
            Txt_Entrega.Text = "";
            Fecha_op.Text = DateTime.Now.ToString();
            Fecha_Entrga.Text = DateTime.Now.ToString();
            Ch_Consultar.Checked = false;
            Btn_Guardar.Enabled = false;
            //Btn_Limpiar.Enabled = false;
            Btn_Eliminar.Enabled = false;
            Btn_Facturar.Enabled = false;
            Estado = "0";
            t = 0;
            Txt_Entrega.Enabled = true;
            Txt_buscar.Enabled = true;
            Txt_buscar.Select();
        }

        private void Eliminar_Click(object sender, EventArgs e)
        {
            DialogResult result = MessageBox.Show("¿Confirma que realmente desea ELIMINAR este registro?", "¿ESTÁ SEGURO/A?", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
            if (result == DialogResult.No)
                return;
            Eiliminar_Serv(1);
            Btn_Limpiar_Click(null,null);
        }

        private void Btn_Facturar_Click(object sender, EventArgs e)
        {
            this.Cursor = Cursors.WaitCursor;
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_facturar.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼{1}▼", num_pedido,Global.USUARIO_SIST));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();
            string[] c = devuelve.Split('▲');
            this.Cursor = Cursors.Default;

            if (c[0].Length > 100)
            {
                MessageBox.Show(devuelve);
                return;
            }

            MessageBox.Show(devuelve + "\n\nATENCIÓN: Ahora abra ''Ventas'' para crear la factura y cerrar la transacción.", "ATENCIÓN",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);

            ////MUESTRA EL FORM VENTAS
            if (Application.OpenForms["Ventas"] != null)
            {
                Application.OpenForms["Ventas"].Close();
            }
            //else
            //{
            //    Ventas form = new Ventas();
            //    form.Show();
            //}

            Global.CerrarVenta = false;

            //FIN DE MUESTRA VENTAS 
            this.Close();
        }

        private void Ch_Facturados_CheckedChanged(object sender, EventArgs e)
        {
            dataGpedidos.Rows.Clear();
            panel1.Visible = false;

            if (Ch_Facturados.Checked)
            {
                Ch_Consultar.Checked=true;
            }
        }

        private void dataLista_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {

        }

        private void Txt_Entrega_TextChanged(object sender, EventArgs e)
        {
            Saldo();
        }

        private void Entrega()
        {
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/ingresar.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼{1}▼{2}▼{3}▼{4}▼{5}▼{6}", Global.NUM_caja, Global.USUARIO_SIST, "ENTREGA ADELANTO, PEDIDO No. " + num_pedido, Txt_Entrega.Text.Trim(), Txt_nombre.Text.Trim(), num_pedido, "0"));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);
            stream.Close();
            //
            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();
            string[] rows;
            rows = devuelve.Split('▲');

            //MUESTRA UN MENSAJE CUANDO HAY ERROR EN EL SERVIDOR
            string resultado = devuelve.ToUpper();
            bool re;
            re = resultado.Contains("ERROR");
            if (re == true)
            {
                MessageBox.Show(devuelve);
                return;
            }
        }

        private void Licencia()
        {
            HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_reg_lic.php");
            rq.Method = "POST";
            byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼", ""));
            rq.ContentType = "application/x-www-form-urlencoded";
            rq.ContentLength = byteArray.Length;
            Stream stream = rq.GetRequestStream();
            stream.Write(byteArray, 0, byteArray.Length);  //    utf8_encode
            stream.Close();

            WebResponse response = rq.GetResponse();
            stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            string devuelve = reader.ReadToEnd();
            reader.Close();
            stream.Close();
            response.Close();
            string[] c = devuelve.Split('▲');

            string resultado = devuelve.ToUpper();
            bool re;
            re = resultado.Contains("<BR");
            if (re == true)
            {
                MessageBox.Show(devuelve);
            }

            if (devuelve != "")
            {
                foreach (var line in devuelve.Split('↔'))
                {
                    var v = line.Split('▲');
                    if (v[0] != "")
                    {
                        Global.OpticaLic = v[0];
                        Global.SerieServ = v[1];
                    }
                }
            }

            if (Global.OpticaLic.Length > 89)//SI EL REGISTRO TIENE 30 DÍGITOS...
            {
                string LicNum = Global.OpticaLic.Replace("xTz", "1");
                LicNum = LicNum.Replace("QkU", "2");
                LicNum = LicNum.Replace("oPi", "3");
                LicNum = LicNum.Replace("YwB", "4");
                LicNum = LicNum.Replace("lnI", "5");
                LicNum = LicNum.Replace("CfL", "6");
                LicNum = LicNum.Replace("VaZ", "7");
                LicNum = LicNum.Replace("RgM", "8");
                LicNum = LicNum.Replace("HsD", "9");
                LicNum = LicNum.Replace("JuE", "0");
                Global.OpticaLic = LicNum;
            }
            else
            {
                MessageBox.Show("Licencia inválida para el uso del sistema.\nConsulte con su proveedor.", "UFF, ¡QUÉ PENA!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                panel5.Visible = true;
                label23.Text = "Óptica - SERIE: " + Global.SerieServ;
                return;
            }

            if (Global.OpticaLic.Length>29)//SI EL REGISTRO TIENE 30 DÍGITOS...
            {
                int fechalim = 0;

                int Modulo = int.Parse(Global.OpticaLic.Substring(0, 4));

                if (Modulo != 102)//SI EL MÓDULO NO ES
                {
                    MessageBox.Show("La licencia del modulo no corresponde.\nConsulte con su proveedor.", "UFF, ¡QUÉ PENA!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    panel5.Visible = true;
                    Titulo_Lic.Text = "Óptica - SERIE: " + Global.SerieServ;
                    return;
                }

                if (Global.OpticaLic.Substring(4, 15) != Global.SerieServ)//SI LOS 15 DÍGITOS NO SON IGUALES A LA SERIE DEL SERVIDOR...
                {
                    MessageBox.Show("Licencia vencida o no es correcta.\nConsulte con su proveedor.", "UFF, ¡QUÉ PENA!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    panel5.Visible = true;
                    Titulo_Lic.Text = "Óptica - SERIE: " + Global.SerieServ;
                    return;
                }
                else//SI EL REGISTRO CORRECPONDE A LA SERIE DE LA PC...
                {

                    //CONSULTA LA VALIDÉZ DE LA FECHA**
                    fechalim = int.Parse(Global.OpticaLic.Substring(22, 8));

                    //SI EL REGISTRO.FECHA ES IGUAL A LA SERIE.FECHA (20210321)...
                    if (Global.fechahoy > fechalim)
                    {
                        MessageBox.Show("Licencia vencida.\nConsulte con su proveedor.", "UFF, ¡QUÉ PENA!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        panel5.Visible = true;
                        Titulo_Lic.Text = "Óptica - SERIE: " + Global.SerieServ;
                        return;
                    }
                }

                panel5.Visible = false;

                string fechaL = Global.OpticaLic.Substring(22, 8);
                label6.Text = "Óptica - v.01.22.10.12 - Licencia de uso hasta el " + fechaL.Substring(6, 2) + "-" + fechaL.Substring(4, 2) + "-" + fechaL.Substring(0, 4);
            }
            else
            {
                MessageBox.Show("Licencia inválida para el uso del sistema.\nConsulte con su proveedor.", "UFF, ¡QUÉ PENA!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                panel5.Visible = true;
                Titulo_Lic.Text = "Óptica - SERIE: " + Global.SerieServ;
                return;
            }
        }

        private void Btn_Historial_Click(object sender, EventArgs e)
        {
            {
                string Fecha = DateTime.Today.ToString("dd-MM-yy");
                //CREAR PDF
                string pdfgenerate = "\\DOC_PDF\\OPTICA\\" + DateTime.Now.ToString("dd-MM-yy") + "_" + DateTime.Now.ToString("HH-mm") + "_HISTORIAL.pdf";
                iTextSharp.text.Document oDoc;
                iTextSharp.text.pdf.PdfWriter pdfw;
                PdfContentByte cb;
                float top1;

                //PREPARA EL PDF
                oDoc = new iTextSharp.text.Document(PageSize.A4, 30, 20, 20, 20);
                pdfw = PdfWriter.GetInstance(oDoc, new FileStream(pdfgenerate, FileMode.Create, FileAccess.Write, FileShare.None));
                pdfw.CompressionLevel = PdfStream.BEST_COMPRESSION;
                pdfw.SetFullCompression();
                oDoc.Open();
                oDoc.NewPage();
                top1 = oDoc.PageSize.Top;

                try
                {
                    //ENCABEZADO LOGO (usado en reportes)
                    iTextSharp.text.Image logo = iTextSharp.text.Image.GetInstance("logo.png", true);
                    logo.CompressionLevel = PdfStream.NO_COMPRESSION;
                    //logo.SetAbsolutePosition(60, top1 - 130);
                    oDoc.Add(logo);
                }
                catch (Exception) { }

                Global.TotalRp = 0;

                cb = pdfw.DirectContent;//DEBE IR ANTES DE LAS LÍNEAS DE TEXTO

                // Creamos un titulo personalizado con tamaño de fuente 10 y color Azul
                Paragraph title = new Paragraph();
                title.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 10f, BaseColor.BLACK);
                title.Add("HISTORIAL DE SERVICIOS: CLIENTE " + Txt_nombre.Text + ", RUC o CI " + Txt_doc.Text +
                    "\nInforme confeccionado el " + DateTime.Now.ToString() + ".");

                title.Alignment = Element.ALIGN_LEFT;
                oDoc.Add(title);

                PdfPTable table = new PdfPTable(8);
                PdfPTable table2 = new PdfPTable(8);

                table.HorizontalAlignment = 0;
                table.TotalWidth = 545f;
                table.LockedWidth = true;
                float[] widthsx = new float[] { 40, 40, 60, 50, 25, 163, 45, 45, };
                table.SetWidths(widthsx);

                HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_historial.php");
                rq.Method = "POST";
                byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼", ID_LABEL.Text.Trim()));
                rq.ContentType = "application/x-www-form-urlencoded";
                rq.ContentLength = byteArray.Length;
                Stream stream = rq.GetRequestStream();
                stream.Write(byteArray, 0, byteArray.Length);
                stream.Close();

                WebResponse response = rq.GetResponse();
                stream = response.GetResponseStream();
                StreamReader reader = new StreamReader(stream);
                string devuelve = reader.ReadToEnd();
                reader.Close();
                stream.Close();
                response.Close();
                string[] c = devuelve.Split('▲');

                string resultado = devuelve.ToUpper();
                bool re;
                re = resultado.Contains("<BR");
                if (re == true)
                {
                    MessageBox.Show(devuelve);
                }
                double total = 0;


                //TEXTO QUE IRÁ DENTRO DE LA TABLA DEL CUERPO
                if (devuelve != "")
                {
                    foreach (var line in devuelve.Trim().Split('↔'))//cada línea se separa por '↔'
                    {
                        if (line == "")
                        {
                            if (total != 0)
                            {
                                Paragraph fechaXx = new Paragraph();
                                fechaXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                fechaXx.Add(" ");

                                Paragraph kilomXx = new Paragraph();
                                kilomXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                kilomXx.Add(" ");

                                Paragraph diagXx = new Paragraph();
                                diagXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                diagXx.Add(" ");

                                Paragraph mecaXx = new Paragraph();
                                mecaXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                mecaXx.Add(" ");

                                Paragraph cantXx = new Paragraph();
                                cantXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                cantXx.Add(" ");

                                Paragraph prodXx = new Paragraph();
                                prodXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                prodXx.Add(" ");

                                Paragraph precioXx = new Paragraph();
                                precioXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9, 1, BaseColor.BLACK);
                                precioXx.Add("Total " + Global.SIMB_ + " ");

                                Paragraph montoXx = new Paragraph();
                                montoXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9, 1, BaseColor.BLACK);
                                montoXx.Add(total.ToString("#,###.##"));

                                table.DefaultCell.BackgroundColor = new BaseColor(255, 255, 255);
                                table.DefaultCell.BorderColor = new iTextSharp.text.BaseColor(255, 255, 255);//211, 211, 211
                                table.AddCell(fechaXx); table.AddCell(kilomXx); table.AddCell(diagXx);
                                table.AddCell(mecaXx); table.AddCell(cantXx); table.AddCell(prodXx); table.AddCell(precioXx); table.AddCell(montoXx);

                            }
                            total = 0;
                            continue; //si la última línea está vacía, continua al siguiente proceso
                        }

                        var v = line.Trim().Split('▼');//dentro de cada línea se separa por columna ('▼')

                        if (v[1] != " ")
                        {
                            if (total != 0)
                            {
                                Paragraph fechaXx = new Paragraph();
                                fechaXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                fechaXx.Add(" ");

                                Paragraph kilomXx = new Paragraph();
                                kilomXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                kilomXx.Add(" ");

                                Paragraph diagXx = new Paragraph();
                                diagXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                diagXx.Add(" ");

                                Paragraph mecaXx = new Paragraph();
                                mecaXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                mecaXx.Add(" ");

                                Paragraph cantXx = new Paragraph();
                                cantXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                cantXx.Add(" ");

                                Paragraph prodXx = new Paragraph();
                                prodXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                                prodXx.Add(" ");

                                Paragraph precioXx = new Paragraph();
                                precioXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9, 1, BaseColor.BLACK);
                                precioXx.Add("Total " + Global.SIMB_ + " ");

                                Paragraph montoXx = new Paragraph();
                                montoXx.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9, 1, BaseColor.BLACK);
                                montoXx.Add(total.ToString("#,###.##"));

                            }
                            total = 0;

                            Paragraph fechaX = new Paragraph();
                            fechaX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            fechaX.Add(" ");

                            Paragraph kilomX = new Paragraph();
                            kilomX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            kilomX.Add(" ");

                            Paragraph diagX = new Paragraph();
                            diagX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            diagX.Add(" ");

                            Paragraph mecaX = new Paragraph();
                            mecaX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            mecaX.Add(" ");

                            Paragraph cantX = new Paragraph();
                            cantX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            cantX.Add(" ");

                            Paragraph prodX = new Paragraph();
                            prodX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            prodX.Add(" ");

                            Paragraph precioX = new Paragraph();
                            precioX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            precioX.Add(" ");

                            Paragraph montoX = new Paragraph();
                            montoX.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                            montoX.Add(" ");


                            table.DefaultCell.BackgroundColor = new BaseColor(255, 255, 255);
                            table.DefaultCell.BorderColor = new iTextSharp.text.BaseColor(255, 255, 255);//211, 211, 211
                            table.AddCell(fechaX); table.AddCell(kilomX); table.AddCell(diagX);
                            table.AddCell(mecaX); table.AddCell(cantX); table.AddCell(prodX); table.AddCell(precioX); table.AddCell(montoX);


                            Paragraph TEXTO_T1 = new Paragraph();
                            TEXTO_T1.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9f, BaseColor.BLACK);
                            TEXTO_T1.Add("FECHA O");

                            Paragraph TEXTO_T2 = new Paragraph();
                            TEXTO_T2.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9f, BaseColor.BLACK);
                            TEXTO_T2.Add("FECHA E");

                            Paragraph TEXTO_T3 = new Paragraph();
                            TEXTO_T3.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9f, BaseColor.BLACK);
                            TEXTO_T3.Add("DOCTOR");

                            Paragraph TEXTO_T4 = new Paragraph();
                            TEXTO_T4.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9f, BaseColor.BLACK);
                            TEXTO_T4.Add("OPERADOR");

                            Paragraph TEXTO_T5 = new Paragraph();
                            TEXTO_T5.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 9f, BaseColor.BLACK);
                            TEXTO_T5.Add("CANT");

                            Phrase Titulo6 = new Phrase("PRODUCTOS & SERVICIOS", FontFactory.GetFont(FontFactory.DefaultEncoding, 9, BaseColor.BLACK));
                            PdfPCell TEXTO_T6 = new PdfPCell(Titulo6);
                            TEXTO_T6.HorizontalAlignment = Element.ALIGN_LEFT;
                            TEXTO_T6.BackgroundColor = new BaseColor(224, 255, 255);

                            Phrase Titulo7 = new Phrase("PRECIO", FontFactory.GetFont(FontFactory.DefaultEncoding, 9, BaseColor.BLACK));
                            PdfPCell TEXTO_T7 = new PdfPCell(Titulo7);
                            TEXTO_T7.HorizontalAlignment = Element.ALIGN_RIGHT;
                            TEXTO_T7.BackgroundColor = new BaseColor(224, 255, 255);

                            Phrase Titulo8 = new Phrase("MONTO", FontFactory.GetFont(FontFactory.DefaultEncoding, 9, BaseColor.BLACK));
                            PdfPCell TEXTO_T8 = new PdfPCell(Titulo8);
                            TEXTO_T8.HorizontalAlignment = Element.ALIGN_RIGHT;
                            TEXTO_T8.BackgroundColor = new BaseColor(224, 255, 255);

                            table.DefaultCell.BackgroundColor = new BaseColor(224, 255, 255);
                            table.DefaultCell.BorderColor = new BaseColor(0, 0, 0);//125,125,255
                            table.AddCell(TEXTO_T1); table.AddCell(TEXTO_T2); table.AddCell(TEXTO_T3);
                            table.AddCell(TEXTO_T4); table.AddCell(TEXTO_T5); table.AddCell(TEXTO_T6);
                            table.AddCell(TEXTO_T7); table.AddCell(TEXTO_T8);
                        }

                        total += double.Parse(v[7]);

                        string FechaO="";
                        string FechaE="";

                        if (v[0].Trim().Length > 0)
                        {
                            string variable;
                            string[] rows;
                            variable = v[0];//2022/10/01
                            rows = variable.Split('-');
                            FechaO = rows[2] + "-" + rows[1] + "-" + rows[0];//string.Format("{0:dd-MM-yyyy}", v[0]);
                        }

                        if (v[1].Trim().Length > 0)
                        {
                            string variable2;
                            string[] rows2;
                            variable2 = v[1];//2022/10/01
                            rows2 = variable2.Split('-');
                            FechaE = rows2[2] + "-" + rows2[1] + "-" + rows2[0];//string.Format("{0:dd-MM-yyyy}", v[1]);
                        }

                        Paragraph fecha = new Paragraph();
                        fecha.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                        fecha.Add(FechaO);

                        Paragraph Fecha_en = new Paragraph();
                        Fecha_en.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                        Fecha_en.Add(FechaE);

                        Paragraph Doctor = new Paragraph();
                        Doctor.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                        Doctor.Add(v[2]);

                        Paragraph Operador = new Paragraph();
                        Operador.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                        Operador.Add(v[3]);

                        Paragraph cant = new Paragraph();
                        cant.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                        cant.Add(v[4]);

                        Paragraph prod = new Paragraph();
                        prod.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK);
                        prod.Add(v[5]);

                        Phrase Precio = new Phrase(double.Parse(v[6]).ToString("#,###.##"), FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK));
                        PdfPCell precio = new PdfPCell(Precio);
                        precio.BorderColor = new BaseColor(255, 255, 255);
                        precio.HorizontalAlignment = Element.ALIGN_RIGHT;
                        //precio.BackgroundColor = new BaseColor(224, 255, 255);

                        Phrase Monto = new Phrase(double.Parse(v[7]).ToString("#,###.##"), FontFactory.GetFont(FontFactory.DefaultEncoding, 8, BaseColor.BLACK));
                        PdfPCell monto = new PdfPCell(Monto);
                        monto.BorderColor = new BaseColor(255, 255, 255);
                        monto.HorizontalAlignment = Element.ALIGN_RIGHT;
                        //monto.BackgroundColor = new BaseColor(224, 255, 255);

                        table.DefaultCell.BackgroundColor = new BaseColor(255, 255, 255);
                        table.DefaultCell.BorderColor = new iTextSharp.text.BaseColor(255, 255, 255);//211, 211, 211
                        table.AddCell(fecha); table.AddCell(Fecha_en); table.AddCell(Doctor);
                        table.AddCell(Operador); table.AddCell(cant); table.AddCell(prod); table.AddCell(precio); table.AddCell(monto);

                        //Global.TotalRp = Global.TotalRp + double.Parse(v[7]);
                    }

                }

                ////TOTAL DE VENTA QUE SALE EN LA CABECERA
                //Paragraph title2 = new Paragraph();
                //title2.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 14, BaseColor.BLUE);
                //title2.Add("Declarado " + Global.SIMB_ + " " + double.Parse(Global.mon_declarado).ToString("#,##0.##") + ".\n" +
                //    "Según computo " + Global.SIMB_ + " " + Global.TotalRp.ToString("#,##0.##") + "\n" +
                //    "Diferencia " + Global.SIMB_ + " " + (double.Parse(Global.mon_declarado) - Global.TotalRp).ToString("#,##0.##"));
                //title2.Alignment = Element.ALIGN_RIGHT;
                //oDoc.Add(title2);

                //PARRAFO VACÍO COMO SEPARADOR
                Paragraph title3 = new Paragraph();
                title3.Font = FontFactory.GetFont(FontFactory.DefaultEncoding, 2, BaseColor.BLACK);
                title3.Add(".");
                title3.Alignment = Element.ALIGN_LEFT;
                oDoc.Add(title3);

                oDoc.Add(table);
                //RS.Close();

                pdfw.Flush();
                oDoc.Close();
                System.Diagnostics.Process.Start(@pdfgenerate);//MUESTRA EL REPORTE EN PDF
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            //DEVOLVIENDO EN NÚMEROS LAS LETRAS REGISTRADAS
            //string Encrip1 = Lic.Text.Trim().Replace("XT", "1");
            //string Encrip2 = Encrip1.Replace("Q!K", "2");
            //string Encrip3 = Encrip2.Replace("OP#", "3");
            //string Encrip4 = Encrip3.Replace("Y$W", "4");
            //string Encrip5 = Encrip4.Replace("NI%", "5");
            //string Encrip6 = Encrip5.Replace("C&F", "6");
            //string Encrip7 = Encrip6.Replace("AZ/", "7");
            //string Encrip8 = Encrip7.Replace("R(G", "8");
            //string Encrip9 = Encrip8.Replace("SD)", "9");
            //string Encrip10 = Encrip9.Replace("U=E", "0");

            string LicNum = Lic.Text.Trim();

            if (LicNum.Length > 89)
            {
                HttpWebRequest rq = (HttpWebRequest)WebRequest.Create("http://" + Global._host + "/ecv/optica_reg_lic.php");
                rq.Method = "POST";
                byte[] byteArray = Encoding.UTF8.GetBytes(string.Format("nu={0}▼", LicNum));
                rq.ContentType = "application/x-www-form-urlencoded";
                rq.ContentLength = byteArray.Length;
                Stream stream = rq.GetRequestStream();
                stream.Write(byteArray, 0, byteArray.Length);  //    utf8_encode
                stream.Close();

                WebResponse response = rq.GetResponse();
                stream = response.GetResponseStream();
                StreamReader reader = new StreamReader(stream);
                string devuelve = reader.ReadToEnd();
                reader.Close();
                stream.Close();
                response.Close();
                string[] c = devuelve.Split('▲');

                string resultado = devuelve.ToUpper();
                bool re;
                re = resultado.Contains("<BR");
                if (re == true)
                {
                    MessageBox.Show(devuelve);
                    return;
                }

                if (devuelve.Trim() != "") { MessageBox.Show("La Licencia se registró. Vuelva a abrir el módulo."); this.Close(); }

            }
            else
            {
                MessageBox.Show("Escriba una licencia válida.", "ATENCIÓN", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                Lic.Select();
            }
        }

        private void Optica_Resize(object sender, EventArgs e)
        {


        }

        private void Btn_Cerrar_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void panel2_Paint(object sender, PaintEventArgs e)
        {

        }

        private void Btn_Cerrar_Click_1(object sender, EventArgs e)
        {
            Close();
        }

        private void button4_Click_1(object sender, EventArgs e)
        {
            Close();
        }

        private void CerrarRegLic_Click(object sender, EventArgs e)
        {
            Lic.Text = "";
            this.Close();
        }

        private void Btn_Enter_Click(object sender, EventArgs e)
        {
            if (Txt_nombre.Text == "")
            {
                Txt_nombre.Select();
                return;
            }

            if (Txt_doc.Text == "")
            {
                Txt_doc.Select();
                return;
            }

            if (Txt_tel.Text == "")
            {
                Txt_tel.Select();
                return;
            }

            if (Txt_DR.Text == "")
            {
                Txt_DR.Select();
                return;
            }

            if (Txt_Entrega.Text == "")
            {
                Txt_Entrega.Select();
                return;
            }

            if (Txt_D_ESF.Text == "")
            {
                Txt_D_ESF.Text = " ";
                Txt_D_ESF.Select();
                return;
            }

            if (Txt_D_CIL.Text == "")
            {
                Txt_D_CIL.Text = " ";
                Txt_D_CIL.Select();
                return;
            }

            if (Txt_D_EJE.Text == "")
            {
                Txt_D_EJE.Text = " ";
                Txt_D_EJE.Select();
                return;
            }

            if (Txt_D_ADD.Text == "")
            {
                Txt_D_ADD.Text = " ";
                Txt_D_ADD.Select();
                return;
            }

            if (Txt_D_D.Text == "")
            {
                Txt_D_D.Text = " ";
                Txt_D_D.Select();
                return;
            }

            if (Txt_D_ESFX.Text == "")
            {
                Txt_D_ESFX.Text = " ";
                Txt_D_ESFX.Select();
                return;
            }

            if (Txt_D_CILX.Text == "")
            {
                Txt_D_CILX.Text = " ";
                Txt_D_CILX.Select();
                return;
            }

            if (Txt_D_EJEX.Text == "")
            {
                Txt_D_EJEX.Text = " ";
                Txt_D_EJEX.Select();
                return;
            }

            if (Txt_D_ADDX.Text == "")
            {
                Txt_D_ADDX.Text = " ";
                Txt_D_ADDX.Select();
                return;
            }

            if (Txt_D_DX.Text == "")
            {
                Txt_D_DX.Text = " ";
                Txt_D_DX.Select();
                return;
            }

            if (Txt_I_ESF.Text == "")
            {
                Txt_I_ESF.Text = " ";
                Txt_I_ESF.Select();
                return;
            }

            if (Txt_I_CIL.Text == "")
            {
                Txt_I_CIL.Text = " ";
                Txt_I_CIL.Select();
                return;
            }

            if (Txt_I_EJE.Text == "")
            {
                Txt_I_EJE.Text = " ";
                Txt_I_EJE.Select();
                return;
            }

            if (Txt_I_ADD.Text == "")
            {
                Txt_I_ADD.Text = " ";
                Txt_I_ADD.Select();
                return;
            }

            if (Txt_I_D.Text == "")
            {
                Txt_I_D.Text = " ";
                Txt_I_D.Select();
                return;
            }

            if (Txt_I_ESFX.Text == "")
            {
                Txt_I_ESFX.Text = " ";
                Txt_I_ESFX.Select();
                return;
            }

            if (Txt_I_CILX.Text == "")
            {
                Txt_I_CILX.Text = " ";
                Txt_I_CILX.Select();
                return;
            }

            if (Txt_I_EJEX.Text == "")
            {
                Txt_I_EJEX.Text = " ";
                Txt_I_EJEX.Select();
                return;
            }

            if (Txt_I_ADDX.Text == "")
            {
                Txt_I_ADDX.Text = " ";
                Txt_I_ADDX.Select();
                return;
            }

            if (Txt_I_DX.Text == "")
            {
                Txt_I_DX.Text = " ";
                Txt_I_DX.Select();
                return;
            }

            if (Txt_TIPO.Text == "")
            {
                Txt_TIPO.Text = " ";
                Txt_TIPO.Select();
                return;
            }

            if (Txt_COLOR.Text == "")
            {
                Txt_COLOR.Text = " ";
                Txt_COLOR.Select();
                return;
            }

            if (Txt_ALTURA_B.Text == "")
            { 
                Txt_ALTURA_B.Text= " ";
                Txt_ALTURA_B.Select();
                return;
            }

            if (Txt_ALTURA_M.Text == "")
            {
                Txt_ALTURA_M.Text = " ";
                Txt_ALTURA_M.Select();
                return;
            }

            if (Txt_OBS.Text == "")
            {
                Txt_OBS.Text = " ";
                Txt_OBS.Select();
                return;
            }
        }

        private void Txt_tel_TextChanged(object sender, EventArgs e)
        {
            if (Txt_tel.Text != "")
            {
                this.AcceptButton = Btn_Enter;
            }
            else
            {
                this.AcceptButton = null;
            }
        }
    }
}