Single Click Expand

[MiddleTommy]

I really like the single click to expand feature. I would like even more a singleclick to expand and a double click to collapse. Items that are already expanded when selected collapse. This seems wrong to me. You usually select an item to view it not collapse it.

[Petar Mladenov]

Hi MiddleTommy,

 I understand your requirement. You can customize the RadTreeView like so:

<telerik:RadTreeView IsExpandOnSingleClickEnabled="True" ItemClick="RadTreeView_ItemClick" x:Name="tree">
            <telerik:RadTreeViewItem Header="Item a">
                <telerik:RadTreeViewItem Header="Item b" />
            </telerik:RadTreeViewItem>
        </telerik:RadTreeView>

private void RadTreeView_ItemClick(object sender, Telerik.Windows.RadRoutedEventArgs e)
       {
           this.tree.IsExpandOnSingleClickEnabled = true;
           if ((e.Source as Telerik.Windows.Controls.RadTreeViewItem).IsExpanded == true)
           {
               this.tree.IsExpandOnSingleClickEnabled = false;
           }
       }

Is this suitable for you?
Greetings,
Petar Mladenov
the Telerik team