namespace Reply
{public partial class Form1 : Form{byte DataSended = 0;byte[] DataToSend = new byte[] { 0x01, 0x02, 0x03 };                                               //数据发送public Form1(){InitializeComponent();System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;serialPort1.DataReceived += new SerialDataReceivedEventHandler(SerialPortDataReceived);       //添加串口中断事件}private void SetOvlShape(int which)                                                               //填充颜色   {switch(which){case 1:ovalShape1.FillColor = Color.Green;ovalShape2.FillColor = Color.Red;ovalShape3.FillColor = Color.Red;break;case 2:ovalShape1.FillColor = Color.Red;ovalShape2.FillColor = Color.Green;ovalShape3.FillColor = Color.Red;break;case 3:ovalShape1.FillColor = Color.Red;ovalShape2.FillColor = Color.Red;ovalShape3.FillColor = Color.Green;break;case 4:ovalShape1.FillColor = Color.Green;ovalShape2.FillColor = Color.Green;ovalShape3.FillColor = Color.Green;break;default:break;}}private void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e){byte DataReceived = (byte)(~serialPort1.ReadByte());                                           //单字节读取try{timer1.Stop();                                                                          //关定时器}catch { }if (DataSended == 0)                                                                        //防止下位机乱发，不处理return;SetOvlShape(DataReceived);try{if (DataToSend[DataSended - 1] == DataReceived)                                            //校验数据{MessageBox.Show("数据校验成功", "成功！");                                              //弹出提示}else{MessageBox.Show("数据校验失败", "数据校验失败");}}catch{}}private void button1_Click(object sender, EventArgs e)                                          //打开/关闭串口{if (serialPort1.IsOpen)                                                                     //一堆处理……{try{serialPort1.Close();}catch{}button1.Text = "打开串口";}else{try{serialPort1.PortName = comboBox1.Text;                                              //串口号    serialPort1.Open();                                                                 //打开}catch{MessageBox.Show("串口打开错误，请检查", "串口");}button1.Text = "关闭串口";}}private void SendDataToSerialPort(SerialPort MyPort, byte DataToSend)                            //单字节发送数据    {byte[] DatasToWrite = new byte[] { DataToSend };                                               //数据包if (serialPort1.IsOpen){try{MyPort.Write(DatasToWrite, 0, 1);                                                  //发数据timer1.Interval = 3 * 1000;                                                        //设定超时时间timer1.Start();                                                                    //定时器}catch{MessageBox.Show("串口数据写入错误", "错误");}}}private void Button_Click(object sender, EventArgs e)                                         //三个按键共用一个处理函数{Button MyButton = (Button)sender;                                                         //通过tag属性来区分DataSended = Convert.ToByte(MyButton.Tag);SendDataToSerialPort(serialPort1, DataToSend[DataSended - 1]);                             //发数据}private void timer1_Tick(object sender, EventArgs e)                                          //定时器事件{string MyStr = DataSended.ToString() + "路数据校验超时，请检查";                          //Messagebox内容 timer1.Stop();MessageBox.Show(MyStr, "错误");}}
}