RadMenu MVVM Binding

[Alexandre]

Hello,

I have a very simple piece of code to bind my RadMenu control to an ObservableList of Menus.

My xaml looks like this:

<telerik:RadMenu Name:"MainMenu" ItemsSource="{Binding Menus}"/>

This works fine. In order to display something more interesting, I can add:

<telerik:RadMenu Name:"MainMenu" ItemsSource="{Binding Menus}" DisplayMemberPath="Name" />

And I get the Name property of my Menus displayed.

Now I would like to get a step further as my Menu class has a SubMenus property so I try to play with RadMenuItem styling and this is where I get lost.

If I write simple code like this, that according to me should do the same as the DisplayMemberPath :

<telerik:RadMenu Name:"MainMenu" ItemsSource="{Binding Menus}" >

      <telerik:RadMenu.Resources>

            <Style TargetType="telerik:RadMenuItem">

                    <Setter Property="Header" Value="{Binding Name}"/>

            </Style>

       </telerik:RadMenu.Resources>

</telerik:RadMenu>

Nothing is displayed on my window when running the code. 

I have checked everything, I can see in my view that the Menu is created and the items inside, etc... but the RadMenus don't display.

As soon as I comment out the Style, menus are displayed. As everything else is straightforward in my code, I think I am missing something obvious but I can't find it. There is no error in debug for binding issues or else.

I use Telerik 2017.1.22.45.

Thanks for your feedback.

[Nasko]

Hi Alexandre,

Based on the provided description that the control is visualized as expected when the Styles are commented what we believe might be causing your issue is that your Style is not based on the default Style of the RadMenuItem. However, that could only be observed if Implicit Styles are used. So, if you are using them please, check the code below:

<Style TargetType="telerik:RadMenuItem" BasedOn="{StaticResource RadMenuItemStyle}">
 <Setter Property="Header" Value="{Binding Name}"/>
</Style>

If you are not using Implicit Styles, please let us know and we will continue our investigation.

Hope this helps.

Regards,
Nasko
Telerik by Progress

[Alexandre]

Hi Nasko,

That was it ! Seems obvious once you know the solution. Thanks for your help.

Regards,

Alexandre