Proper use of IsDisposed in Windows Forms

I have a small win form app that consists 开发者_如何学运维of a form and a systray icon.

When the user closes the app from the systray I get the ObjectDisposedException as some controls (task icon) still try and access the main windows form.

I have tried wrapping the code that access the systray in a if(!this.IsDisposed) wrapper, however the check for this is always bypassed.

Am I missing something that I should be doing here? This seems quite trivial.

Thanks.

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You're in control of what happens when the user closes the app. Close things in the right order (based on what forms/controls reference other forms/controls) and you can avoid this problem without hacking in IsDisposed checks.