Hello Abs,

In order to have the XamDiagram and the XamDataTree share essentially the same context menu, I would recommend defining your XamContextMenu as a resource and giving it an x:Key. This will allow you to access it by the key that you give it when you set up the ContextMenuManager needed to apply your XamContextMenu to a particular control. The ContextMenuManager has a ContextMenu property, and by defining your XamContextMenu as a resource, you can apply it using a StaticResource. An example XamDiagram using this method could look like the following:

<ig:XamDiagram>
 <ig:ContextMenuService.Manager>
   <ig:ContextMenuManager ContextMenu="{StaticResource contextMenu}"/>
 </ig:ContextMenuService.Manager>
</ig:XamDiagram>

I have attached a sample project to demonstrate the above. I hope this helps.

Please let me know if you have any other questions or concerns on this matter.

Sincerely,
Andrew
Associate Developer