Rad Treeview Expander

[Sasireka]

Hi,

How to increase the speed of child node while expanding parent node in rad treeview?

eg : Our application having more than 50 child nodes so it taking very slow while expanding a parent node. Is any way to increase the speed?

Regards,
Sasireka 

[Tina Stancheva]

Hi Sasireka,

The RadTreeView control supports two different data virtualization techniques - UIVirtualization and LoadOnDemand.  Using both together should optimize the performance of the RadTreeView. However, you still need to keep in mind that loading the child items on demand might initially take time depending on the logic that retrieves the children collection. If you'd like to test such a solution, you can examine the RadTreeView Virtualizaiton demo in the WPF examples.

If you still experience a slow item expansion, you can also try disabling the RadTreeView Expand/Collapse animations through the AnimationManager.IsAnimationEnabled attached property:

<telerik:RadTreeView Grid.Row="1"
           ItemsSource="{Binding Items}"
           telerik:AnimationManager.IsAnimationEnabled="False"
           ItemTemplate="{StaticResource TreeItemTemplate}" />

Regards,
Tina Stancheva
the Telerik team