My Window will not be garbage collected if it has a child of type FormulaEditorDialog.

For a simplified example call the following two event handlers on buttons of any dialog.

WeakReference _WeakRef = null;

private void OnCheck(object sender, RoutedEventArgs e)

{

GC.Collect();

GC.WaitForPendingFinalizers();

if(_WeakRef.IsAlive)

{

throw new Exception("Window alive!");

}

}

private void OnDialog(object sender, RoutedEventArgs e)

{

Window dlg = new Window();

dlg.Content = new FormulaEditorDialog(); // with this line dlg lives forever

_WeakRef = new WeakReference(dlg);

if(dlg.ShowDialog() == true)

{

}

}

The window will stay alive, if it has content of type FormulaEditorDialog.

Do you have any workaround or solution for this problem?

TIA

Michael