Child restriction in treeview

[Alan]

I was enabling a drag and drop in treeview but I want restrict nodes from having more than 2 children.

[Princy]

Hi Alan,

Try the following code to achieve your scenario.

ASPX:

<telerik:RadTreeView ID="RadTreeView1" runat="server" EnableDragAndDrop="true" EnableDragAndDropBetweenNodes="true" onnodedrop="RadTreeView1_NodeDrop" >
 <Nodes>
 ..................
 </Nodes>
</telerik:RadTreeView>

C#:

protected void RadTreeView2_NodeDrop(object sender, Telerik.Web.UI.RadTreeNodeDragDropEventArgs e)
{
 RadTreeNode destNode = e.DestDragNode;
 if (destNode.Nodes.Count < 2)
 {
  destNode.Nodes.Add(sourceNode);
 }
}

Hope this helps.

Thanks,
Princy.

[Ivana]

Hi Alan,

The following online demos shows a very good example of nodes' drag and drop functionality of RadTreeView on the client as well as on the server:
http://demos.telerik.com/aspnet-ajax/treeview/examples/functionality/draganddropnodes/defaultcs.aspx.

I hope it will help.

Kind regards,
Ivana
the Telerik team

[Rakesh]

Hello Princy

It is possible to show cursor image as a validation on drag drop functionality ??