在C＃中的线程应用程序，如果我要锁定对象，我们可以说一个队列，如果出现异常，将对象保持锁定状态？这里是伪code：

In a c# threading app, if I were to lock an object, let us say a queue, and if an exception occurs, will the object stay locked? Here is the pseudo-code:

int ii;
lock(MyQueue)
{
   MyClass LclClass = (MyClass)MyQueue.Dequeue();
   try
   {
      ii = int.parse(LclClass.SomeString);
   }
   catch
   {
     MessageBox.Show("Error parsing string");
   }
}

据我了解，code后抓不执行 - 但我一直在想，如果锁将被释放。

As I understand it, code after the catch doesn't execute - but I have been wondering if the lock will be freed.

推荐答案

第一;你有没有考虑的TryParse？

First; have you considered TryParse?

in li;
if(int.TryParse(LclClass.SomeString, out li)) {
    // li is now assigned
} else {
    // input string is dodgy
}

锁将被释放2个原因;首先，锁定基本上是：

Monitor.Enter(lockObj);
try {
  // ...
} finally {
    Monitor.Exit(lockObj);
}

二;你赶上并且不重新抛出内部异常，所以锁定从来没有真正看到一个例外。当然，你持有的锁，一个消息的时间，这可能是一个问题。

Second; you catch and don't re-throw the inner exception, so the lock never actually sees an exception. Of course, you are holding the lock for the duration of a MessageBox, which might be a problem.

因此​​，将公布所有，但最致命的灾难不可恢复的异常。

So it will be released in all but the most fatal catastrophic unrecoverable exceptions.