To accomplish the task you can hook on the AfterClientCheck event and uncheck all TreeNodes except the TreeNode that has been checked last.
Example:
| ASPX |
 Copy Code |
|
<script>
function AfterCheck(node)
{
var i;
var nodes = node.TreeView.AllNodes;
for(i=0; i<nodes.length; i++)
{
if(nodes[i] != node)
nodes[i].UnCheck();
}
}
</script>
<rad:RadTreeView
ID="RadTreeView1"
runat="server"
CheckBoxes="True"
AfterClientCheck="AfterCheck"/> |