button1, button2, richtexbox1, serialport1,
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
namespace serialCom
{
public partial class Form1 : Form
{
string datain;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
serialPort1.PortName = "COM5"; //通信端口
serialPort1.BaudRate = 4800; //设置波特率
serialPort1.Open();//打开串口
}
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
datain = serialPort1.ReadExisting();
this.Invoke(new EventHandler(DisplayText));
}
//定义返回数据函数
private void DisplayText(object sender, EventArgs e)
{
richTextBox1.Text = datain;
}
private void button2_Click(object sender, EventArgs e)
{
serialPort1.Close();
Close();
}
}
}