Losing my Memory

After fixing the classic event handler reference memory leak, I uncovered a WPF memory leak in my application.  It seems that WPF itself has a memory issue in the way it tries to lazy load dictionary resources.

I had a lot of additional memory in snapshot diffs being taken up by DeferredAppResourceReference objects.  There seems to be a Hotfix that addresses the issue, but I found a decent code solution by Andrew S on MSDN.  This code will instantiate the dictionary objects on startup, avoiding the buggy MS lazy loading.

public partial class App : Application

{

protected override void OnStartup(StartupEventArgs e)

{

WalkDictionary(this.Resources);

base.OnStartup(e);

}

private static void WalkDictionary(ResourceDictionary resources)

{

foreach (DictionaryEntry entry in resources)

{

}

foreach (ResourceDictionary rd in resources.MergedDictionaries)

WalkDictionary(rd);

}

}

 

 

Ironically, now one of the largest growth objects in my app is WeakReference.