WPF memory leak

Question

I have a simple wpf application. In main window i have stack panel and 2 buttons. First button adds 100 my user controls (without any data bindings, events, bitmaps), and se

Answer 1

I want to release memory immediately.

Don't. Trust GC.

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

Don't. Trust GC.

After 5 - 10 min memory releases

Didn't I say trust GC?

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• Garbage collection model will make sure the unwanted managed memory in your system is released (which includes almost all of your controls memory). It uses an algorithm for optimising which includes generations, free memory available, possibly CPU available... so GC.Collect() will interfere with it.

• GC.Collect() is asynchronous so no immediate effect.

• The only resource you need to be careful is the unmanaged resource which usually is handled by Dispose Pattern. Otherwise don't mess with GC, it does its job very well.