ObjectDisposedException

Hello everyone,


Any general rules/practices to avoid "ObjectDisposedException"-- System.ObjectDisposedException: Cannot access a disposed object?


thanks in advance,
George

Simple. Never ever try to call a method of a disposed object :)
(or, if it's a control, check with the IsDisposed property)

Thanks Magos,


Your reply is great! Let me descirbe more details here. I am writing a simple Http Server using HttpListener class in C#.

1. The exception from server side, when I call EndGetContext, not from client side;
2. On the server side, I create an HttpListener object, and waiting for incoming client request;
3. When I received a request, I will process the request asynchronously by using BeginGetContext, and in this way HttpListener object instance can still listen for incoming calls, while processing backend at the same time;
4. When sending the request to server from client, the client will close the connection immediately -- during the asynchronous processing period;
5. The server will throw exception when I call EndGetContext. At the same time, ObjectDisposedException will happen.

Any ideas why the exception will happen? I am also interested in whose Disposed method is called, any ways to detect?

Quote:

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Originally Posted by Magos

Simple. Never ever try to call a method of a disposed object :)
(or, if it's a control, check with the IsDisposed property)

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regards,
George