Can't find the parent of a templated control by type(!) (wpf)
In my WPF project I have a bit complex control. In the project I only use Controls (they're all templated), besides MainWindow.
On one screen I have the following layout (for showing the layout after templates have been applied and contents filled):
MyScreenControl -MyTableControl --ItemsControl --- HeaderItemsControl -----HeaderItemsControl.Header ------MyHeaderControl -----HeaderItemsControl.Items ------MyItemControl ------MyItemControl ------MyItemControl ...
When I'm in the ScreenControl's code file, in the OnMouseLeftButtonDown method I would like to determine if the click event came from a MyHeaderControl or a MyItemControl.
The MouseButtonEventArgs's Source is the ScreenControl and the OriginalSource is the TextBlock in the MyItemControl/MyHeaderControl 's template.
My first attempt to find the MyItemControl/MyHeaderControl was to start from the OriginalSource and recursively look at the type of the Parent property. It works fine till I get to the root of the Template (which is in this case a ViewBox), but the root has no Parent element.
I've used a method like this in az earlier project of mine and it worked, but then I was working with UserControls, not Controls, nor Templates.
Any ideas how should I approach this problem (a good idea is as wellcome as a code)?
Have you tried simply to get the originalSource's templatedParent ? :
Control originalSource = e.OriginalSource; MyItemControl myItemControl = originalSource.TemplatedParent as MyItemControl; MyHeaderControl myHeaderControl = originalSource.TemplatedParent as MyHeaderControl; if (MyItemControl != null) .... else if (MyHeaderControl != null) ....
Check out VisualTreeHelper.GetParent, which will let you walk the visual tree where the controls have actually been instantiated through the template.