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• MiddleTommy Intermediate

  Posted on Jan 27, 2012 (permalink)

  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.

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• Answer Petar Mladenov Petar Mladenov

  Posted on Feb 1, 2012 (permalink)

  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

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