Programacion

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Conmutador_UART_01
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

byte[] buffer = { 0 };

private void Form1_Load(object sender, EventArgs e)
        {
            serialPort1.Open();
        }

private void button1_Click(object sender, EventArgs e)
        {
            if (button1.BackColor == Color.SteelBlue)
            {
                button1.BackColor = Color.Crimson;
                buffer[0] = 1;
                serialPort1.Write(buffer, 0, 1);
            }
            else
            {
                button1.BackColor = Color.SteelBlue;
                buffer[0] = 0;
                serialPort1.Write(buffer, 0, 1);
            }
        }

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            serialPort1.Close();
        }
    }
}

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