上位机串行通讯的通用思路

先上代码：

public class SerialPortServer{//字段SerialPort SP = new SerialPort();int DelayTime = 5000;//默认是5sstring Info = "";string SendStringBuffer = "";string ReceiveStringBuffer = "";//构造函数public SerialPortServer(string COM, int BaudRate, int DelayTime){//init spSP.PortName = COM;SP.BaudRate = BaudRate;SP.StopBits = StopBits.One;SP.Parity = Parity.None;//init DelayTimethis.DelayTime = DelayTime;}//公共方法public string OpenSP(){try{SP.Open();}catch (Exception){return "Open Error";throw;}            return "OK";}public void CloseSP(){SP.Close();}//私有方法private void MainMission(){while (true){if ("" != SendStringBuffer){SendString();                    }Thread.Sleep(DelayTime);Receive();Parse();}}private void Receive(){ReceiveStringBuffer = SP.ReadExisting();}private void SendString(){SP.Write(SendStringBuffer);SendStringBuffer = "";}private void Parse(){Info = ReceiveStringBuffer.Substring(0,3);}//get方法public string GetInfo(){return this.Info;}//set方法public void SendFrame(string Frame){this.SendStringBuffer = Frame;}}

说明：