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Always use Dispose().

Finalize is there for the run-time, as a "fail-safe" mechanism for code
that forgets to call Dispose(). It's not for you to call directly.

Hi,

I want to know, the difference between finalize and dispose? I know that
those methods release unmanaged resources. I am confused, when to use
dispose and when finalize.

Regards,
Bhuwan

Hello,

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If you have unmanaged resources in your class you usually impelement both: A
finalizer and a Dispose method, like this:

public class test: IDisposable {
public void Dispose() {
Dispose(true);
GC.SuppressFinalize(this);
}

~test() {
Dispose(false);
}

protected virtual void Dispose(bool disposing) {
if (disposing) {
// Clean up managed resources, call Dispose methods of member
variables

return;
}
// Clean up unmanaged resources
}

This will ensure that the Dispose method is called exactly once: The
Dispose() method will remove the object from the finalizer queue. Otherwise
the finalizer is called.

But instead of writing your own destructor here, you should take a look at
the SafeHandle class; they wrap all this up quite nicely.

Kind regards,
Henning Krause


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