?C#之windows桌面軟件第七課：（下集）串口工具實現數據校驗、用燈反應設備狀態

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;using System.IO.Ports; namespace Reply {public partial class Form1 : Form{byte DataSended = 0;byte[] DataToSend = new byte[] { 0x01, 0x02, 0x03 }; //數據發送public Form1(){InitializeComponent();System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;serialPort1.DataReceived += new SerialDataReceivedEventHandler(SerialPortDataReceived); //添加串口中斷事件}private void SetOvlShape(int which) //填充顏色 {switch(which){case 0x01:ovalShape1.FillColor = Color.Green;break;case 0x11:ovalShape1.FillColor = Color.Red;break;case 0x02:ovalShape2.FillColor = Color.Green;break;case 0x12:ovalShape2.FillColor = Color.Red;break;case 0x03:ovalShape3.FillColor = Color.Green;break;case 0x13:ovalShape3.FillColor = Color.Red;break;case 0x04:ovalShape1.FillColor = Color.Green;ovalShape2.FillColor = Color.Green;ovalShape3.FillColor = Color.Green;break;case 0x14:ovalShape1.FillColor = Color.Red;ovalShape2.FillColor = Color.Red;ovalShape3.FillColor = Color.Red;break;default:break;}}private void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e){byte DataReceived = (byte)(serialPort1.ReadByte()); //單字節讀取SetOvlShape(DataReceived);}private void button1_Click(object sender, EventArgs e) //打開/關閉串口{if (serialPort1.IsOpen) //一堆處理……{try{serialPort1.Close();}catch{}button1.Text = "打開串口";}else{try{serialPort1.PortName = comboBox1.Text; //串口號 serialPort1.Open(); //打開}catch{MessageBox.Show("串口打開錯誤，請檢查", "串口");}button1.Text = "關閉串口";}}private void SendDataToSerialPort(SerialPort MyPort, byte DataToSend) //單字節發送數據 {byte[] DatasToWrite = new byte[] { DataToSend }; //數據包if (serialPort1.IsOpen){try{MyPort.Write(DatasToWrite, 0, 1); //發數據}catch{MessageBox.Show("串口數據寫入錯誤", "錯誤");}}}private void Button_Click(object sender, EventArgs e) //三個按鍵共用一個處理函數{Button MyButton = (Button)sender; //通過tag屬性來區分DataSended = Convert.ToByte(MyButton.Tag);SendDataToSerialPort(serialPort1, DataToSend[DataSended - 1]); //發數據}} }

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