Going to delete this post... Because its going on wrong direction other than for what it is. Thanks all.

I'm not aware of a simple way to achieve this. One way to do this would be to walk the Visual Tree, looking at the data binding on each element in the tree, and check to see if it has a binding that relates to the relevant property. "WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes. My blog | My articles | MoXAML PowerToys | Onyx

Ohhh really?????? Thanks a lot.

Welcome ! ;) Abhijit Jana | Codeproject MVP Web Site : abhijitjana.net Visit My Latest Article : Beginner's Guide : Exploring IIS 6.0 With ASP.NET

Take a look here[^]

You're welcome. :-D "WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes. My blog | My articles | MoXAML PowerToys | Onyx

Setting the Mode on the Binding of the SelectedItem to OneWayToSourceeliminates the error message <controls:TreeView ItemsSource="{Binding KeywordSource}" SelectedItem="{Binding SelectedKeyword, Mode=OneWayToSource}"> I lied, throws a compile time error...

Last selected Item of treeview control will display the gray color, on expand of expander for the reason it represent disabled selection. Select an item in treeviewcontrol, and then click outside the preview of treeviewcontrol to trigger lost focus of treeviewcontrol, the selected item will be gray. <Style x:Key="TreeViewItemItemTemplateStyle" TargetType="{x:Type TreeViewItem}"> <Style.Resources> <!-- Background of selected item when focussed --> <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Blue" /> <!-- Background of selected item when not focussed --> <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="LightGray" /> </Style.Resources> </Style> you can override the gray color by applying the color you want for not focussed style.

The ControlTemplate for a TextBox must contain exactly one element that is tagged as the content host element; this element will be used to render the contents of the TextBox. To tag an element as the content host, assign it the special name PART_ContentHost. The content host element must be either a ScrollViewer or an AdornerDecorator. The content host element may not host any child elements. From here, MSDN[^]