诊断的ObjectDisposedException&QUOT;安全手柄已经关闭&QUOT;

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问题描述

我有被击中的消息

This happens as soon as I launch the application.

Sadly the stack trace is really unhelpful (see below). Is there any way for me to determine what call was being attempted asynchronously here?

Does DoAsyncCall() really imply an async method call?

解决方案

The problem was caused by my use of a using(){} block.

    using (WaitHandle handle = asyncResponse.AsyncWaitHandle)
    {
      asyncResponse.AsyncWaitHandle.WaitOne();
      string response = asyncRequest.EndInvoke(asyncResponse);
      asyncResponse.AsyncWaitHandle.Close();
      return response;
    }

When the calling thread is interrupted the using block is still calling Close on the WaitHandle.

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