CheckChildNodes and OnClientNodeChecked

[Jay]

I am looking at the sample http://demos.telerik.com/ASPNET/Prometheus/TreeView/Examples/Functionality/CheckBoxes/DefaultCS.aspx
and it says that
"This example also demonstrates  the use of the OnClientNodeChecked event, which allow fine-tuning of the RadTreeView behavior. This event is used to check/uncheck all child nodes if the parent node is checked/unchecked."

But this sample does not use the OnClientNodeChecked event. Instead it uses the CheckChildNodes property.

But I am actually looking for the Javascript to "uncheck" all of child nodes if it is unchecked (it sounds like the way the example used to work). But not to auto-check all child nodes if checked. Does this example still exist?

Thanks!

[Veselin Vasilev]

Hi Jay,

You are right - in that example we do not use the OnClientNodeChecked event anymore.

You can subscribe to the OnClientNodeChecking client-side event and define its event handler as follows:

<script type="text/javascript">
function OnClientNodeCheckingHandler(sender, eventArgs)
{
    var node = eventArgs.get_node();

    if (node.get_checked())
    {
        uncheckAllChildren(node);
    }
}

function uncheckAllChildren(node)
{
    var nodes = node.get_nodes();

    for (var i = 0; i < nodes.get_count(); i++)
    {
        var child = nodes.getNode(i);
        child.uncheck();
        uncheckAllChildren(child);
    }
}
</script>

I hope this helps.

Best wishes,
Veskoni
the Telerik team

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[Jay]

Perfect! Thanks!