串口通讯 -- 上位机端

button.cs

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;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (!serialPort1.IsOpen)
            {
                try
                {
                    serialPort1.Open();
                    serialPort1.Write("T");
                    serialPort1.Close();
                }
                catch
                {
                    MessageBox.Show("There was an error. Please make sure that the correct port was selected, and the device, plugged in.");
                }
            }
        }
    }
}