Have a ContextMenu on a RadTree on specific constraints

[Julien]

Hi!

I've a tree(representing a folder/file tree). I want to add a contextMenu only on "Folder" element

On all my "INodeElement", I've a property "IsFolder".

How to do that the contextMenu is only displayed when this property is true?

OR
How to have a different contextMenu depending of this property?

Thank you!

[Viktor Tsvetkov]

Hello Julien,

With our next minor release we will upload such an example on our QSF, but you can see it now from the attached sample project. It is not exactly the same scenario, but the same idea. If you have further questions feel free to ask.

All the best,
Viktor Tsvetkov
the Telerik team

[Julien]

It seems I cannot open it because it's a silverlight project and not wpf. I get errors about silverlight on load 

[Viktor Tsvetkov]

Hi Julien,

Attached is the example in WPF. Examine it and tell me if it works for you.

Kind regards,
Viktor Tsvetkov
the Telerik team

[Julien]

Very interessant:

But: 
-How the template selector choose the correct template?
-We are trying to avoid all graphic code in the code behind, how can we create different menus like you do but in xaml side?

[Viktor Tsvetkov]

Hi Julien,

- In the example that I sent to you the template selector chooses the template based on the type of the file. You can find more info about ItemTemplateSelector here.
- In this case you can define the ItemContainerStyle property of the RadTreeView this way:

<Style x:Key="treeViewStyle"
                   TargetType="telerik:RadTreeViewItem">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding Path=IsFolder}"
                                 Value="True">
                        <Setter Property="telerik:RadContextMenu.ContextMenu">
                            <Setter.Value>
                                <!--Your custom context menu-->
                                <telerik:RadContextMenu />
                            </Setter.Value>
                        </Setter>
                    </DataTrigger>
                </Style.Triggers>
            </Style>

If you need more help I will be glad to further assist you.

Best wishes,
Viktor Tsvetkov
the Telerik team

[Julien]

It seems great,

But I've some event, and I have to create EventSetter. For my "Opened"  on RadContextMenu, there is no problem, but I've "Click" event on each RadMenuItem. How to set a different handler for each RadMenuItem with an EventSetter?

And it seems I cannot reach anymore my menu from the code behind by its name:

RadTreeViewItem radItem = uxContextualMenu.GetClickedElement<RadTreeViewItem>();

[Viktor Tsvetkov]

Hello Julien,

Instead of setting a different event handler you can set a different command on each RadMenuItem. Could you please examine the modified project and tell me if it works for you?

Best wishes,
Viktor Tsvetkov
the Telerik team

[Julien]

it seems this is what I need.

But why it doesn't show the menu on any node this isn't a leaf? in my case, it's a recursive tree, so I need to have this menu on every node

[Viktor Tsvetkov]

Hi Julien,

In this sample project the context menu is shown only if the item has a property IsCodeBehindFile. In your case you will set the trigger on the IsFolder property and every item will have such property, so you will have your custom context menu on every item.

All the best,
Viktor Tsvetkov
the Telerik team