Alternative for handling context menu click event in RadTreeView

[Ryan]

Hi

My RadTreeView's are in a HiearchicalDataTemplate so the number of TreeViews is not known at design time.

I need to handle the ContextMenu's click event on a RadTreeViewItem but obviously I cannot just write RadTreeView.AddHandler

Does anyone have an alternative idea?

Thanks.

<Grid>
    <Grid.Resources>
            <Style x:Key="ItemContainerStyle" TargetType="{x:Type telerik:RadTreeViewItem}">
                <Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay}" />
            </Style>

            <HierarchicalDataTemplate
                x:Key="TreeViewItemTemplate"
                ItemsSource="{Binding TreeViewItemChildren}">
                <StackPanel Orientation="Horizontal">
                    <telerik:RadContextMenu.ContextMenu>
                        <telerik:RadContextMenu>
                            <telerik:RadMenuItem Header="Add to bookmarks" />
                        </telerik:RadContextMenu>
                    </telerik:RadContextMenu.ContextMenu>
                    <Image Margin="0,0,2,0" Height="16" Width="16">
                        <Image.Style>
                            <Style TargetType="Image">
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding IconType}" Value="Folder">
                                        <Setter Property="Source" Value="{StaticResource Folder}"></Setter>
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding IconType}" Value="MultiPubReport">
                                        <Setter Property="Source" Value="{StaticResource MultiPubReport}"></Setter>
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding IconType}" Value="SinglePubReport">
                                        <Setter Property="Source" Value="{StaticResource SinglePubReport}"></Setter>
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding IconType}" Value="Publication">
                                        <Setter Property="Source" Value="{StaticResource Publication}"></Setter>
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </Image.Style>
                    </Image>
                    <TextBlock Text="{Binding Name}"></TextBlock>
                </StackPanel>
            </HierarchicalDataTemplate>

            <HierarchicalDataTemplate x:Key="TreeViewTemplate">
                <telerik:RadTreeView
                    x:Name="ReportsTreeView"
                    ItemsSource="{Binding TreeViewItemChildren}"
                    ItemTemplate="{StaticResource TreeViewItemTemplate}"
                    IsLineEnabled="True"
                    IsDragDropEnabled="True"
                    PreviewDragEnded="ReportsTreeView_PreviewDragEnded"
                    SelectionMode="Single"
                    ItemContainerStyle="{StaticResource ItemContainerStyle}">
                </telerik:RadTreeView>
            </HierarchicalDataTemplate>

            <HierarchicalDataTemplate
                x:Key="PanelBarItemTemplate"
                ItemsSource="{Binding TreeViewItemViewModels}"
                ItemTemplate="{StaticResource TreeViewTemplate}" >
                <TextBlock Text="{Binding Name}"></TextBlock>
            </HierarchicalDataTemplate>

        </Grid.Resources>

        <telerik:RadPanelBar
            x:Name="ReportMenu"
            ExpandMode="Multiple"
            ItemTemplate="{StaticResource PanelBarItemTemplate}"
            VerticalAlignment="Top">
        </telerik:RadPanelBar>

    </Grid>

[Petar Mladenov]

Hello Ryan,

Could you please examine the attached approach and let me know if it fits in your scenario? I just introduced the ItemClick event in XAML and it worked. Please let me know if I am missing something.

Best wishes,
Petar Mladenov
the Telerik team

[Ryan]

Thank you Petar, but how do I know which RadTreeViewItem has been clicked?

[Petar Mladenov]

Hi Ryan,

You can use the Opened event of the RadContextMenu and get the clicked RadTreeViewItem behind like so:

private void RadContextMenu_Opened(object sender, RoutedEventArgs e)
       {
           DataItem clicked = (sender as RadContextMenu).GetClickedElement<RadTreeViewItem>().Item as DataItem;
           MessageBox.Show(clicked.Name.ToString());
       }

You can also find the described approach in the attached solution.
Feel free to ask if you need further assistance.

Kind regards,
Petar Mladenov
the Telerik team

[Ryan]

Great. Thanks very much.