using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;namespace WindowsFormsApplication1{ public partial class Form1 : Form { public Form1() { CheckForIllegalCrossThreadCalls = false; InitializeComponent(); try { serialPort1.Open(); } catch (Exception ex) { MessageBox.Show("Error al abrir el puerto serie: " + ex.Message); } } private void PuertoSerie_DataReceived(object sender,System.IO.Ports.SerialDataReceivedEventArgs e) { } private void Form1_Load(object sender, EventArgs e) { } private void Enviar_Click(object sender, EventArgs e) { //serialPort1.WriteLine("hola"); } private void Leer_Click(object sender, EventArgs e) { // Create an instance of StreamReader to read from a file. // The using statement also closes the StreamReader. StreamReader sr = new StreamReader("C:\\Users\\jhon\\Desktop\\PROYECTOS\\proter\\pocoyo.txt"); int counter = 0; string line; // Read and display lines from the file until the end of // the file is reached. while ((line = sr.ReadLine()) != null) { //TextoEntrada.Text = line.ToString() + "\n"; serialPort1.WriteLine(line); counter++; } } }}