EventToCommandBehavior, treeview, context menu and MVVM

[Randy Hompesch]

Ok,

I have a treeview that is LoadOnDemand. I have a HierarchicalDataTemplate and within it I define a RadContextMenu.

Currently, I am setting the ItemClicked event handler and calling the ViewModel from code behind. It all works, but I know I am being a bad boy calling the viewmodel from the codebehind. 

 

Here's what I'd like to do: 

Somehow, bind a command to the HierachicalDataTemplate so that I have a single function that receives all context menu clicks via a command. I should be able to sort out which context menu item was clicked in the command parameter (I think).

I have tried adding an EventToCommandBehavior to the HierachicalDataTemplate, but the compiler whines that nested properties are not supported.

I get this because I am already using EventToCommandBehavior in the treeview itself.

It seems that putting an additional EventToCommandBehavior in the HierarchicalDataTemplate is a no-go.

How can I receive commands from context menus generated in a loadondemand treeview and have it be MVVM friendly?

Thanks ... Ed

 

[Stefan]

Hi Ed,

I tested the behavior of the control and I am able to define two usages of the EventToCommandBehavior within a similar setup on my end. Can you please take a look at the attached example? Note, that I have used the Add Context Menu SDK Example for testing. Would it be possible to demonstrate your setup in the project and send it back to me, so I can assist you further?

Thanks in advance for your cooperation.

Regards,
Stefan
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