Client side check if node has children

[Moon]

In your example:

http://demos.telerik.com/aspnet-ajax/treeview/examples/functionality/contextmenu/defaultcs.aspx

On Deletion, you delete the node. I want to first check if there are any children for that node, and if so send a alert. How do I check if the selected TreeNode has children? The below treeNode.Nodes.length doesn't work. thanks!

 

case "Delete":

 

 

 

if (treeNode.Nodes.length > 0) {

 

alert(

 

"Please remove content of this directory prior to deletion.");

 

}

 

 

else {

 

 

 

var result = confirm("Are you sure you want to delete the item: " + treeNode.get_text());

 

args.set_cancel(!result);

}

 

 

break;

[Shinu]

Hi Moon,

You could use ' treeNode.get_nodes().get_count() ' in order to get the count of child nodes from client side. See the example shown below.

JavaScript:

<script type="text/javascript">
function onClientContextMenuItemClicking(sender, args)
{
    var menuItem = args.get_menuItem();
    var treeNode = args.get_node();
    switch(menuItem.get_value())
    {
         . . .
        case "Delete":
        if (treeNode.get_nodes().get_count() > 0)
        {
            alert("Please remove content of this directory prior to deletion.");
        }
        else
        {
            var result = confirm("Are you sure you want to delete the item: " + treeNode.get_text());
            args.set_cancel(!result);
        }
        break;
    }
}
</script>

You can also checkout the following links which describes the most important functions of the client-side RadTreeNodeCollection object.
RadTreeNodeCollection

-Shinu.