Bdtjtk

I want to define TreeView and its ContextMenu as HierarchicalDataTemplate. The context menu shall change according to the treeview item selected. I have generated an ObservableCollection and binded the property of the class I want to display as texblock under treeview.

  <!--Define the data template for the Treeview Item-->

    <HierarchicalDataTemplate DataType="{x:Type data:CamTreeViewItem}"

                              ItemsSource="{Binding TreeViewItems}">

        <TextBlock Text="{Binding Name}" />

    </HierarchicalDataTemplate>





    <!--Define the data template for the Context Menu of the Treeview Item- 

->

    <HierarchicalDataTemplate DataType="{x:Type data:TreeViewContextMenu}"

                              ItemsSource="{Binding ContextMenuItems}">

        <TextBlock Text="{Binding Header}" />

    </HierarchicalDataTemplate>

Which I then use in

               <TreeView  x:Name="camTreeView" ItemsSource="{Binding TreeItems}" MouseRightButtonDown="CamTreeView_MouseRightButtonDown" Margin="10,30,0,0" Grid.ColumnSpan="2">





                <TreeView.ContextMenu >

                    <ContextMenu MouseLeftButtonDown="ContextMenu_MouseLeftButtonDown"  ItemsSource="{Binding ContextMenuItems}">

                    </ContextMenu>

                </TreeView.ContextMenu>

This is the backup code where I set the datacontext:

       private void SetupContextMenu(CamTreeViewItem selectedItem)

    {



        var contextMenuList = new TreeViewContextMenu();



        switch (selectedItem.Type)



        {



            case "Machine":

                var machineContext = new TreeViewContextMenu("machine related");

                machineContext.ContextMenuItems.Add(new TreeViewContextMenu("under machine"));

                machineContext.ContextMenuItems.Add(new TreeViewContextMenu("under machine2"));



                var machineTop = new TreeViewContextMenu("top level");

                machineTop.ContextMenuItems.Add(machineContext);



                contextMenuList = machineTop;

                break;

            case "Operation":



                break;

            default:



                break;





        }



        DataContext = contextMenuList;

}

Now I am facing two problems.

1- When I populate the context menu depending on the treeview item being selected, the DataContext is set to the new context so it deletes my treeview and shows only the ContextMenu.

2- "MouseLeftButtonDown" event in the context menu does not fire.

I guess I am making some fundemental mistakes in data binding and usage of DataContext. Do I need to define the context menu right under the treeview in xaml or can I define it as windows resource and bind it independent of Treeview?

Thanks for your help,