在Wince和Windows Mobile下，很多设备以串口（Serial Port/Com Port）的方式提供访问接口，例如 可以通过串口访问GPS的receiver，从而接收NMEA Data。
在CF.NET2.0开始，MS把串口操作封装了到System.IO.Ports.SerialPort里面,大大简便了对串口的操 作，不再需要P/Invoke就可以直接操作串口。
下面展现两个串口通信类，一个负责发生，一个负责接收，两个类分别在不要的设备上运行。
public class ReceiverPort : IDisposable
{
private readonly System.IO.Ports.SerialPort serialPort;
public ReceiverPort()
{
serialPort = new System.IO.Ports.SerialPort("COM1", 4800,
System.IO.Ports.Parity.None, 8, System.IO.Ports.StopBits.One);
serialPort.Handshake = System.IO.Ports.Handshake.None;
try
{
serialPort.DataReceived += new
System.IO.Ports.SerialDataReceivedEventHandler(this.serialPort_DataReceived);
serialPort.Open();
if (serialPort.IsOpen)
{
Console.WriteLine("Open the serial port successful");
}
else
{
Console.WriteLine("Fail to open the serial port");
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public void Dispose()
{
if (serialPort.IsOpen)
{
serialPort.Close();
}
serialPort.Dispose();
}
private void serialPort_DataReceived(object sender,
System.IO.Ports.SerialDataReceivedEventArgs e)
{
Console.WriteLine("RECEIVED:" + serialPort.ReadLine());
}
}
public class SenderPort : IDisposable
{
private readonly System.IO.Ports.SerialPort serialPort;
public SenderPort()
{
serialPort = new System.IO.Ports.SerialPort("COM1", 4800,
System.IO.Ports.Parity.None, 8,
System.IO.Ports.StopBits.One);
serialPort.Handshake = System.IO.Ports.Handshake.None;
try
{
serialPort.Open();
if (serialPort.IsOpen)
{
Console.WriteLine("Open the serial port successful");
}
else
{
Console.WriteLine("Fail to open the serial port");
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public void Dispose()
{
if (serialPort.IsOpen)
{
serialPort.Close();
}
serialPort.Dispose();
}
public bool Send(string str)
{
try
{
if (serialPort.IsOpen)
{
Console.WriteLine("SENT:" + str);
serialPort.WriteLine(str + "\r");
return true;
}
else
{
return false;
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return false;
}
}
}