Help me, (expand and Collapse of a node in treeview)

[Butter]

I want to use event ( onSelect) to help me (expand or Collapse ) one node in treeview
pls hepl me do it.
my code here:
(
     function onSelect(e){
             if (this.dataItem(e.node) != null) {
                  this.expand(e.node);
                 this.collapse(e.node);
             }
        }
)

[Kiril Nikolov]

Hello Butter,

You need to use an instance of the TreeView and use its .expand() and .collapse() methods to perform the functionality you need. You can check for the data-expanded attributed in order to determine of give node is expanded or note. For your convenience here is a jsBin example which demonstrates a possible implementation.

 

Regards,
Kiril Nikolov
Telerik

[Butter]

wow  amazing, i have been do it  
thank you ,Kiril Nikolov