try  
　　{                
     int receivedBytesCount = socket.Receive(DataBuffer, DataBufferSize - DataBufferSizeLast, SocketFlags.None);   
  
     if (receivedBytesCount == 0)   
     {   
         //socket连接已断开,可以重连，可以断开                              
          return;   
     }   
　　　//数据处理
                            
      }   
       catch (SocketException e)   
      {   
           //10035 == WSAEWOULDBLOCK   
           if (e.NativeErrorCode.Equals(10035))   
           {   
               //仍然处于连接状态,但是发送可能被阻塞   
             }   
            else  
            {   
                //连接错误,返回错误代码:e.NativeErrorCode 
                  return;   
            }   
　　　}   
     catch(Exception e)
     {
         //其他异常
     }