C#基于SerialPort类实现串口通讯详解

第C#基于SerialPort类实现串口通讯详解本文实例为大家分享了C#基于SerialPort类实现串口通讯的具体代码，供大家参考，具体内容如下

最终效果

窗体设置：

usingSystem;

usingSystem.Collections.Generic;

usingSystem.ComponentModel;

usingSystem.Data;

usingSystem.Drawing;

usingSystem.Linq;

usingSystem.Text;

usingSystem.Threading.Tasks;

usingSystem.IO.Ports;

usingSystem.Threading;

usingSystem.Windows.Forms;

namespaceSerialCommunication

publicpartialclassForm1:Form

{

System.Threading.SynchronizationContextm_SyncContext=null;

SerialPortserialPort=null;

ToHexadecimalStringtoHexadecimalString=newToHexadecimalString();

publicForm1()

{

m_SyncContext=SynchronizationContext.Current;

InitializeComponent();

}

//Datainitialization

privatevoidForm1_Load(objectsender,EventArgse)

{

string[]ports=SerialPort.GetPortNames();

SerialPortNumber.Items.AddRange(ports);

SerialPortNumber.SelectedIndex=SerialPortNumber.Items.Count00:-1;

BaudRateCom.Text="9600";

//Setparameters

CheckBitCom.Text="None";

DataBitCom.Text="8";

StopBitCom.Text="One";

}

//Senddata

privatevoidSend_Click(objectsender,EventArgse)

{

try

{

//Senddataandhandleexceptions

byte[]bytes=newbyte[SendMessage.Text.Length];

bytes=Encoding.Default.GetBytes(SendMessage.Text);

serialPort.Write(bytes,0,bytes.Length);

}

catch(Exceptionerror)

{

MessageBox.Show(error.Message);

}

}

//Bytetohexadecimalstring

//Cleardata

privatevoidClear_Click(objectsender,EventArgse)

{

ReceiveMessage.Text="";

}

privatevoidOpen_Click(objectsender,EventArgse)

{

stringportName=SerialPortNumber.Text;

intbuadRate=int.Parse(BaudRateCom.Text);

Parityparity=0;

switch(CheckBitCom.Text)

{

case"None":

parity=Parity.None;break;

case"Odd":

parity=Parity.Odd;break;

case"Even":

parity=Parity.Even;break;

case"Mark":

parity=Parity.Mark;break;

case"Space":

parity=Parity.Space;break;

}

intdataBit=int.Parse(DataBitCom.Text);

StopBitsstopBits=0;

switch(StopBitCom.Text)

{

case"None":

stopBits=StopBits.None;break;

case"One":

stopBits=StopBits.One;break;

case"Tow":

stopBits=StopBits.Two;break;

case"OnePointFive":

stopBits=StopBits.OnePointFive;break;

}

try

{

if(Open.Text=="Open")

{

serialPort=newSerialPort(portName,buadRate,parity,dataBit,stopBits);

serialPort.Open();

Open.Text="Close";

}

elseif(Open.Text=="Close")

{

serialPort.Close();

Open.Text="Open";

}

}

catch(Exceptionerrror)

{

MessageBox.Show(errror.Message);

}

serialPort.DataReceived+=onDataReceived;

}

privatevoidonDataReceived(objectsender,SerialDataReceivedEventArgse)

{

try

{

Byte[]bytes=newbyte[serialPort.BytesToRead];

serialPort.Read(bytes,0,serialPort.BytesToRead);

m_SyncContext.Post(newSendOrPostCallback((obj)=

{

ReceiveMessage.AppendText(Encoding.Default.GetString(