Hi all, I am new to the WPF arena and am trying to get started. I have created a simple winform containing a treeview and an elementhost containing my XAML. The XAML contains a textbox. When I select a node in the treeview I want to pass the node name to the textbox. Everything is running fine but I do not know how to reference the controls within an XAML from the hosting winform. Any ideas, pointers, references I can look at?