用SerialPort类实现简单串口编程代码,CSharp代码库,德仔网

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【CSharp】用SerialPort类实现简单串口编程
作者:Dezai.CN / 发布于2013/2/20/ 657
.NET提供了SerialPort类进行串口通信,使用很简单
using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
 using System.IO.Ports;
 
 namespace CsharpComm
 {
     /// <summary>
     /// Window1.xaml 的交互逻辑
     /// </summary>
     public partial class Window1 : Window
     {
         public Window1()
         {
             InitializeComponent();
         }
 
         //定义 SerialPort对象
         SerialPort port1;
 
         //初始化SerialPort对象方法.PortName为COM口名称,例如"COM1","COM2"等,注意是string类型
         public void InitCOM(string PortName)
         {
             port1 = new SerialPort(PortName);
             port1.BaudRate = 9600;//波特率
             port1.Parity  = Parity.None;//无奇偶校验位
             port1.StopBits = StopBits.Two;//两个停止位
             port1.Handshake = Handshake.RequestToSend;//控制协议
             port1.ReceivedBytesThreshold = 4;//设置 DataReceived 事件发生前内部输入缓冲区中的字节数
             port1.DataReceived += new SerialDataReceivedEventHandler(port1_DataReceived);//DataReceived事件委托
         }
 
         //DataReceived事件委托方法
         private void port1_DataReceived(object sender, SerialDataReceivedEventArgs e)
         {
             try
             {
                 StringBuilder currentline = new StringBuilder();
                 //循环接收数据
                 while (port1.BytesToRead > 0)
                 {
                     char ch = (char)port1.ReadByte();
                     currentline.Append(ch);
                 }
                 //在这里对接收到的数据进行处理
                 //
                 currentline = new StringBuilder();
             }
             catch(Exception ex)
             {
                 Console.WriteLine(ex.Message.ToString());
             }
 
         }
 
         //打开串口的方法
         public void OpenPort()
         {
             try
             {
                 port1.Open();
             }
             catch { }
             if (port1.IsOpen)
             {
                 Console.WriteLine("the port is opened!");
             }
             else
             {
                 Console.WriteLine("failure to open the port!");
             }
         }
 
         //关闭串口的方法
         public void ClosePort()
         {
             port1.Close();
             if (!port1.IsOpen)
             {
                 Console.WriteLine("the port is already closed!");
             }
         }
 
         //向串口发送数据
         public void SendCommand(string CommandString)
         {
             byte[] WriteBuffer = Encoding.ASCII.GetBytes(CommandString);
             port1.Write(WriteBuffer, 0, WriteBuffer.Length);
         }
         
         //调用实例
         private void btnOpen_Click(object sender, RoutedEventArgs e)
         {
             //我现在用的COM1端口,按需要可改成COM2,COM3
             InitCOM("COM1");
             OpenPort();
         }
     }
 }
试试其它关键字
　SerialPort　
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