Unable to achieve data virtualization with treelistview

[Manishkumar]

Hi,

I am trying to use data virtualization with radtreelistview.

SummaryData 

[] lstData = GetSummaryData();
VirtualQueryableCollectionView vqResults = new VirtualQueryableCollectionView(lstData) { LoadSize = 100, VirtualItemCount = 100000 };
radTreelistView.ItemsSource = vqResults ;


But i am getting a blank screen.

If I directly assign the source to radtreelistview, it loads correctly.
I need to implement data virtualization with radtreelistview.  Are there any demerits of using data virtualization ?
Can you please provide an example project.

Thanks.

 

[Vlad]

Hello,

 Data virtualization is not supported for RadTreeListView due to the nature of the component. The treelist will need all the data in order to provide hierarchical sorting, filtering, etc. 

Regards,
Vlad
the Telerik team

[Voltz]

will data virtualization ever be supported for the treelistview?

[Vlad]

Hi,

 I'm afraid that data virtualization cannot work with RadTreeListView since this component will need all the data in order to build the hierarchy and later sort and filter while with data virtualization you have only part of the data. Neither hierarchy, sorting or filtering will work correctly with just part of the data. 

Kind regards,
Vlad
the Telerik team