Limited max count when checking the checkbox

[Tommy]

Hi Team,
    I have set the checkbox value is true also can checked succeed,but I want to limit the max checked count in my treeview.
Can you give me a hand?  thank .

[Shinu]

Hello Tommy,

I guess you want to cancel the TreeNode checking if a particular count reached. If that the case, you can try the following client side code. Attach function to the OnClientNodeChecking event of RadTreeView.

JavaScript:

<script type="text/javascript">
function OnClientNodeChecking(sender, args)
{
     var tree = $find("<%= RadTreeView1.ClientID %>");
     var checkedNodes = tree.get_checkedNodes();
     if(!args.get_node().get_checked())
     {
         if((checkedNodes.length)>2)
         {
            alert ("Max limit reached, Cannot check the node");
            args.set_cancel(true);
         }
     }
}
</script>

Thanks,
Shinu.