如何解决读或写时SerialPort错误时该怎么办
我通过4Modbus dll创建了通讯RTU。接下来,我创建此类的对象:
public class SerialPortAdapter : IStreamResource
{
private const string NewLine = "\r\n";
private SerialPort _serialPort;
public SerialPortAdapter(SerialPort serialPort)
{
_serialPort = serialPort;
_serialPort.NewLine = NewLine;
}
public int InfiniteTimeout
{
get { return SerialPort.InfiniteTimeout; }
}
public int ReadTimeout
{
get { return _serialPort.ReadTimeout; }
set { _serialPort.ReadTimeout = value; }
}
public int WriteTimeout
{
get { return _serialPort.WriteTimeout; }
set { _serialPort.WriteTimeout = value; }
}
public void DiscardInBuffer()
{
_serialPort.DiscardInBuffer();
}
public int Read(byte[] buffer,int offset,int count)
{
return _serialPort.Read(buffer,offset,count);
}
public void Write(byte[] buffer,int count)
{
_serialPort.Write(buffer,count);
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
_serialPort?.Dispose();
_serialPort = null;
}
}
}
并创建连接Rtu
var adapter = new SerialPortAdapter(serialPort);
adapter.ReadTimeout = ReadTimeout;
adapter.WriteTimeout = WriteTimeout;
Master = ModbusSerialMaster.CreateRtu(adapter);
在读取和写入方法中发生错误。由于端口关闭或已超过时间。并且它关闭程序,但是当我添加try catch时。它不会完成工作,并且会无限期崩溃这些错误。发生错误时如何中断读写操作?
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