WPF Databinding ContextMenu of Button inside a DataTemplate inside an ItemsControl

Question

I am trying to figure out how I can bind the ContextMenu of the Button that is being added in the ItemsControl I have. Basically, I\'m wanting to be able to right click on a

Answer 1

Using WPF: Binding a ContextMenu to an MVVM Command as an introduction to what Tags can do, I figured out how to do what I was looking for by using multiple Tags to save the Context of what I was looking for.

I first made sure to give my window a x:Name

Next, on the Button inside my DataTemplate of my ItemsControl, I set a Tag and set it to my Window

Next, in the ContextMenu, I seth the DataContext of the ContextMenu to the Tag I set on the Button, I also needed to create a Tag on the ContextMenu and point it back to the Content Property of the Button so that I can pass that into the CommandParameter

At this point, I can now bind my MenuItem correctly using the Command from my ViewModel and the Content Property from the Button

This is the final XAML for my ItemsControl:

One thing to note is that I had to change the CommandParameter on my ViewModel to take an Object instead of a String. The reason I did this was because I was getting an exception on the CanExecute method in my DelegateCommand

This is the exception I was getting:

Unable to cast object of type 'MS.Internal.NamedObject' to type 'System.String'.

I'm not sure exactly what's causing that exception to throw, but changing it to Object works ok for me.