winform串口控件serialPort1的使用
serialPort1 控件使用的关键点主要有三:
1、配置串口号
2、配置数据接收事件
3、打开串口
关键代码如下:
private void Form1_Load(object sender, EventArgs e) { serialPort1.PortName = "COM1"; serialPort1.DataReceived += SerialPort1_DataReceived; serialPort1.Open(); } private void SerialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) { try { int len = serialPort1.BytesToRead; Byte[] buf = new byte[len]; int length = serialPort1.Read(buf, 0, len); string result = System.Text.Encoding.ASCII.GetString(buf); UpdateTextBox(result); } catch (Exception ex) { UpdateTextBox(ex.Message); } }
本用例用到测试工具:
pwd: 3gkk