I have a tree control sometimes when select a item and go for deleting and before deleting
I check the count,since I am expencting the count to be 1 (trvOutputTree.SelectedItems.Count())
it says count is two, first item is a always DependencyProperty.UnsetValue.
I checked this link: http://msdn.microsoft.com/en-us/library/system.windows.dependencyproperty.unsetvalue.aspx
but dont in this case why its showing this? Are you guys internally using it somewhere?