How to prevent Checked event by confirm box on radtreeview?

[Dũng]

I have a radtreeview with checkbox. When I check the checkbox, I want to prevent checked event by clicking 'cancel' on confirm box but it doesnt work. Here is my code:

<telerik:RadTreeView ID="_tree" runat="server" Skin="Silk" CheckBoxes="true" OnClientNodeChecking='ClientNodeChecking' TriStateCheckBoxes="true" CheckChildNodes="true"></telerik:RadTreeView>

function ClientNodeChecking(sender, eventArgs) {
        var node = eventArgs.get_node();
        if (node.get_checked()) {
            var agree = confirm('Do you want to check?');
            if (agree) {
                node.check();
            }
            else
                return false;
        }
    }

[Dũng]

I myself find a solution. Using OnClientNodeChecked:

function ClientNodeChecked(sender, eventArgs) {
        var node = eventArgs.get_node();
        if (!node.get_checked()) {
            var agree = confirm('Do you want to check?');
            if (!agree) node.check();
        }
    }

[Ivan Danchev]

Hello,

Thank you for sharing your solution.

You can prevent the OnClientNodeClicked event from firing by conditionally canceling the OnClientNodeClicking event depending on the user selection by calling the eventArgs.set_cancel(true); function.

Regards,
Ivan Danchev
Telerik