Max Level Depth

[Andreas Karpinski]

Hi,

is there any way to set a max Level for the Treeview?

I just want to allow 3 Level Main Node -> Nodes -> Subnodes and not further! Because in my case it wont be used so i need a way to disable or block adding a "SubSubNode".

So it should look like this:

Main Node

 |_Node 1

 | |_Subnode 1

 | |_Subnode 2

 | |_Subnode 3

 |_Node 1

 | |_Subnode 1

 |_Node 1

  |_Subnode 1

   |_Subnode 2

And not like:

Main Node

 |_Node 1

 | |_Subnode 1

 | | |_SubSubnode 1

 | | |_SubSubnode 2

 | |_Subnode 2

 | |_Subnode 3

 |_Node 1

 | |_Subnode 1

 |_Node 1

  |_Subnode 1

   |_Subnode 2

[Shinu]

Hello Andreas,

You can check the level of the node and based on that, you can either add or prevent adding node. Here is the example that I tried from client.

javscript:

<script type="text/javascript">
    function Button1_onclick() {
        var tree = $find('<%= RadTreeView1.ClientID %>');
        var node = tree.findNodeByText('SubNode 1');
        if (node.get_level() < 2) {  // Here check for level before adding the node, index starts from 0
            // add the node
        }
        else {
            alert("Cannot add child nodes");
        }
    }
</script>

And here is the equivalent server side cod for checking the level before adding the node.
CS:

protected void RadTreeView1_NodeClick(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
    {
        RadTreeNode node = (RadTreeNode)e.Node;
        if (node.Level < 2)
        {
            // add node
        }
    }

-Shinu.

[Andreas Karpinski]

So there is no build in feature ?

But anyway your solution works!
Thank you!


Now i 've go another question.

Is there anyway to disable an item out of the RadTreeViewContextMenu?

So i can disable the "Create Node" button on Level > 2

[Schlurk]

I believe for the context menu functionality you can read over the sample code provided in this article, it should help you out with your implementation :)