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Question

Why the control.OnHandleDestroyed() is not called when the parent TabPage is removed using the tabControl1.RemoveAt() call?

Thanks.

Answer 1

May be Dispose is not called on removed TabPages..You can add

Dispose();

or

GC.Collect();
GC.WaitForPendingFinalizers();

after removing to force garbage collector run its cycle.
Hope that helps.