Double click selection behavior

[Guang]

I have a wpf radtreeview, now I can use left click to select item,

but i want to the selection behavior to be changed to double click, how could I achieve that?

[Martin Ivanov]

Hello Guang,

This is not supported by RadTreeView, but you can get such behavior with custom code. You can use the PreviewMouseLeftButtonDown event to handle (cancel) the selection on mouse click. Then, you can manually implement the selection in the ItemDoubleClick event of RadTreeView. 

private void RadTreeView_ItemDoubleClick(object sender, Telerik.Windows.RadRoutedEventArgs e)
{
    var itemContainer = (RadTreeViewItem)e.OriginalSource;            
    var methodInfo = typeof(RadTreeView).GetMethod("HandleItemSelectionFromUI", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
    methodInfo.Invoke(this.treeView, new object[1] { itemContainer });
}

private void RadTreeView_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
    e.Handled = true;
}

Regards,
Martin Ivanov
Progress Telerik