Select the clicked Item of a RadTreeView

This tutorial will show you how to select the item that was clicked, while opening the RadContextMenu. In order to achieve this, you have to do the following things:

• Handle the Opened event of the RadContextMenu

• Get an instance of the clicked RadTreeViewItem

• Set the SelectedItem of the RadTreeView

Before starting, here is a sample RadTreeView with a sample RadContextMenu attached.

• XAML

<telerik:RadTreeView x:Name="radTreeView"> 
    <telerik:RadContextMenu.ContextMenu> 
        <telerik:RadContextMenu x:Name="radContextMenu"> 
            <telerik:RadMenuItem Header="Menu Option 1" /> 
            <telerik:RadMenuItem Header="Menu Option 2" /> 
            <telerik:RadMenuItem Header="Menu Option 3" /> 
        </telerik:RadContextMenu> 
    </telerik:RadContextMenu.ContextMenu> 
    <telerik:RadTreeViewItem Header="Category1"> 
        <telerik:RadTreeViewItem Header="Product1" /> 
        <telerik:RadTreeViewItem Header="Product2" /> 
        <telerik:RadTreeViewItem Header="Product3" /> 
    </telerik:RadTreeViewItem> 
    <telerik:RadTreeViewItem Header="Category2" /> 
    <telerik:RadTreeViewItem Header="Category3" /> 
    <telerik:RadTreeViewItem Header="Category4"> 
        <telerik:RadTreeViewItem Header="Product A" /> 
        <telerik:RadTreeViewItem Header="Product B" /> 
        <telerik:RadTreeViewItem Header="Product C" /> 
    </telerik:RadTreeViewItem> 
    <telerik:RadTreeViewItem Header="Category5" /> 
</telerik:RadTreeView> 

To handle the Opened event attach an event handler to it.

• XAML

<telerik:RadContextMenu x:Name="radContextMenu1"  
                        Opened="RadContextMenu_Opened"> 
    <telerik:RadMenuItem Header="Menu Option 1" /> 
    <telerik:RadMenuItem Header="Menu Option 2" /> 
    <telerik:RadMenuItem Header="Menu Option 3" /> 
</telerik:RadContextMenu> 

• C#
• VB.NET

private void RadContextMenu_Opened( object sender, RoutedEventArgs e ) 
{ 
} 

Private Sub RadContextMenu_Opened(sender As Object, e As RoutedEventArgs) 
End Sub 

In it get the instance of the clicked RadTreeViewItem by calling the GetClickedElement<T>() method of the RadContextMenu.

• C#
• VB.NET

private void RadContextMenu_Opened(object sender, RoutedEventArgs e) 
{ 
    RadTreeViewItem item = this.radContextMenu.GetClickedElement<RadTreeViewItem>(); 
} 

Private Sub RadContextMenu_Opened(sender As Object, e As RoutedEventArgs) 
    Dim item As RadTreeViewItem = Me.radContextMenu.GetClickedElement(Of RadTreeViewItem)() 
End Sub 

The last thing to do is to set the SelectedItem property of the RadTreeView to the instance of the RadTreeView item that has been clicked.

If you are having a dynamic data scenario, where the RadTreeView is bound to a collection, you have to set the SelectedItem property to the DataContext of the clicked RadTreeViewItem.

• C#
• VB.NET

private void RadContextMenu_Opened(object sender, RoutedEventArgs e) 
{ 
    RadTreeViewItem item = this.radContextMenu.GetClickedElement<RadTreeViewItem>(); 
    if (item != null) 
    { 
        this.radTreeView.SelectedItem = item; 
    } 
} 

Private Sub RadContextMenu_Opened(sender As Object, e As RoutedEventArgs) 
    Dim item As RadTreeViewItem = Me.radContextMenu.GetClickedElement(Of RadTreeViewItem)() 
    If item Is Nothing Then 
        Me.radTreeView.SelectedItem = item 
    End If 
End Sub