I have a problem in my application:
I added combo box with 2 events: DropDownClosed and DropDownOpened.
In DropDownClosed event, I want to add new item to the ItemsSource and fixed the selected item to be the new item.
In DropDownOpened event, I want to remove the item from the ItemsSource.
But, when closing the combo box, after DropDownOpened event happened, also DropDownClosed event happened.
In simple application, it isn’t happened.