I have read a lot of articles, comments and how To's (see below for a brief list of links) about the use of MVVM with TreeView (WPF & C#), but none of them convince me for the proof of concept that i have in mind. Why? Because i think that the Drag & Drop operation is, only, a View Operation. As i understand the MVVM is like: Model: Data and data extract/insert operations ViewModel: Commands, Main Logic and so on... View: User Experience After defining the concepts, i want to note something: the view can be a console application, a web page, a window application or a touch application. I'm not sure that if the view is a console app, there must be commands to handle the drag and drop operations like Sparky at al mentioned (we can have an interface defining the ViewModel and a lot of pairs classes (View & ViewModel), but then, where is the re usability of the code?) Let me be clear about something, the idea of Sparky is very interesting (and clear) so it was