commandbinding

The easiest way is to implement ButtonClick event handler and invoke Window.Close() method, but how doing this through a Command binding? Nir I think that in real world scenarios a simple click handler is probably better than over-complicated command-based systems but you can do something like that: using RelayCommand from this article http://msdn.microsoft.com/en-us/magazine/dd419663.aspx public class MyCommands { public static readonly ICommand CloseCommand = new RelayCommand( o => ((Window)o).Close() ); } <Button Content="Close Window" Command="{X:Static local:MyCommands.CloseCommand}"

I have a Menu where each MenuItem in the hierarchy has its Command property set to a RoutedCommand I've defined. The associated CommandBinding provides a callback for the evaluation of CanExecute which controls the enabled state of each MenuItem . This almost works. The menu items initially come up with the correct enabled and disabled states. However when the data that my CanExecute callback uses changes, I need the command to re-request a result from my callback in order for this new state to be reflected in the UI. There do not appear to be any public methods on RoutedCommand or

(Note - this is a re-post as my first question got posted under wrong headline: Here Sorry!) I have a standard WPF treeview and have bound items to view model classes. I now wish to handle behaviour when items are double-clicked (opening documents visual-studio-style). I can get event-handler to fire in the control housing the treeview (xaml shown), but how do I bind to specific behaviour on the view model classes - e.g. ProjectViewModel? Preferable bound to ICommand-implementer, as this is used elsewhere... <TreeView ItemsSource="{Binding Projects}" MouseDoubleClick="TreeView_MouseDoubleClick