public string OnClientTabSelecting { get; set; }

Public Property OnClientTabSelecting As String
	Get
	Set

public:
property String^ OnClientTabSelecting {
	String^ get ();
	void set (String^ value);
}

member OnClientTabSelecting : string with get, set

Property Value

Use the OnClientTabSelecting property to specify a JavaScript function that will be executed prior to tab selecting - either by left-clicking it with a mouse or hitting enter after tabbing to that tab. You can cancel that event (prevent tab selecting) by seting the cancel property of the event argument to true.

Two parameters are passed to the handler

• sender (the client-side KaxTabControl object)
• eventArgs with one property
  • tab - the instance of the selected tab
  • cancel - whether to cancel the event

<script language="javascript">
function ClientTabSelectingHandler(sender, eventArgs)
{
var tabControl = sender;
var tab = eventArgs.get_tab();

alert("You will be selecting the " + tab.get_text() + " tab in the " + tabControl.get_id() + " tabcontrol.");

if (tab.Text == "Education")
{
alert("Education cannot be selected");
eventArgs.set_cancel(true);
}
}
</script>

<kettic:KaxTabControl id="KaxTabControl1" runat="server" OnClientTabSelecting="ClientTabSelectedHandler">
<Tabs>
<kettic:KaxTab Text="Personal Details"></kettic:KaxTab>
<kettic:KaxTab Text="Education"></kettic:KaxTab>
<kettic:KaxTab Text="Computing Skills"></kettic:KaxTab>
</Tabs>
</kettic:KaxTabControl>

Reference