是的，这很大您的代码根本无法在发布模式下运行的问题，它将引发异常.
尝试考虑一下.
用户提出请求
您的代码运行
您会显示一个消息框
..直到服务器上的 对消息框采取措施之前，什么也不会发生.

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Yeah that''s a big problem you code wont run at all in release mode, it will cast an exception.
Try to think about it..
A user makes a request
your code runs
you display a message box
.. not nothing happens until someone on the server takes action on the message box.

see this post[^] to see how you can display a messagebox in the client side, after the request has been processed and a response has been sent by the server