No post back when we click on the +

[Tejas Kan]

Hi team,

I am using the RadTreeList control.
When I try to expand or collapse the tree by clicking on the '+' or '-' of the tree, it dose a post back.
How can I avoid this and have this happen only on the client side.

Also a second question, I want to to be able to select/deselect all the child nodes by clicking any where on a parent node, again by using client side events.

Thanks in advance.

Tejas

[Gimmik]

Hi Tejas,

I'll answer your questions in order.

1) Unfortunately, there is no way to expand the RadTreeList without a postback. Only the data you view on the screen is bound to the control. This is done for performance reasons. In order to expand the RadTreeList client-side, the whole tree would need to be transferred with each postback. For large trees this would be prohibitively slow.

2) This is fairly simple to do. It's called recursive selection and Telerik has a guide on how to implement it. Here's the link:
http://www.telerik.com/help/aspnet-ajax/treelist-recursive-selection.html

Hope this helps!
-Gimmik