如何在Socket上调试第一次机会异常？-HowdoIdebugthisfirstchanceexceptiononaSocket?

In my C#/WPF/.Net 4.5 program I'm trying to do a Disconnect() on a socket and when I do I get a

在我的C#/ WPF / .Net 4.5程序中,我正在尝试在套接字上执行Disconnect(),当我这样做时,我得到一个

A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll

System.dll中发生了'System.Net.Sockets.SocketException'类型的第一次机会异常

. . . in the Visual Studio Output window.

。 。 。在Visual Studio输出窗口中。

My code is wrapped in a try/catch but it never lands in the catch . . .

我的代码包含在try / catch中,但它永远不会落入catch中。 。 。

    try
      {
          if (_TCPConn.Connected)
          {
              _TCPConn.Shutdown(SocketShutdown.Both);
              _TCPConn.Disconnect(true);   // SocketException
          }
      }
      catch (Exception e)
      {
   . . . 
      }

Up until this point the Socket works fine - it's used to communicate with some manufacturing machinery and all that stuff works perfectly. I've tried this with and without the Shutdown() with the same results. If I let my program keep running after the first chance exception the whole program just disappears and exits the debugger. Then the message in the Output window just says

到目前为止,Socket工作正常 - 它用于与一些制造机器进行通信,所有这些工作都很完美。我在使用和不使用Shutdown()时尝试了相同的结果。如果我让程序在第一次机会异常后继续运行,整个程序就会消失并退出调试器。然后输出窗口中的消息说

The program '[0xE6C] ProcFacTest.vshost.exe: Managed (v4.0.30319)' has exited with code 0 (0x0).

程序'[0xE6C] ProcFacTest.vshost.exe:Managed(v4.0.30319)'已退出,代码为0(0x0)。

How do I figure out what's causing this?

我如何找出导致这种情况的原因?

1 个解决方案