Validating RadTree

[Marco]

Hi, I want to validate the radTree, checking if the user has at least selected one node. How can I do that? I tried to create a custom control binding it to a server side validation function but I receive an error saying that the control cannot be validated.

Can you please help me?

Thanks,
Marco

[Yana]

Hello Marco,

You can validate RadTreeView with javascript using get_selectedNode() method of the treeview client-side object like this:

var tree = $find("<%= RadTreeView1.ClientID %>");
if (tree.get_selectedNode() == null)
{
  alert("Please select a node!");
}

You should use get_selectedNodes method when MultipleSelect property is on.

Hope this helps.

Greetings,
Yana
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.