# OnClientClicking

The clicking event occurs when the RadToggleButton control is clicked, immediately after the mouse button is released. The event is fired after the client-side validation occurs, and can be canceled.

The event handler receives two parameters:

1. The instance of the clicked RadToggleButton control.

2. An eventArgs parameter of type [Telerik.Web.UI.**ButtonCancelEventArgs**](https://docs.telerik.com/devtools/aspnet-ajax/api/client/args/Telerik.Web.UI.ButtonCancelEventArgs), containing the following properties and methods:

   * get_cancel() - returns a bool value that indicates whether the event was canceled. True means the event is canceled.

   * set_cancel(*shouldCancel*) - sets a bool value that indicates whether the event will be canceled. Setting true means the event will be canceled.

   * get_commandName() - returns the value assigned to the RadToggleButton's **CommandName** property.

   * get_commandArgument() - returns the value assigned to the RadToggleButton's **CommandArgument** property.

This event is handy in scenarios when the user wants to cancel the page submission, or prevent execution of the other client-side events based on a certain condition. One such scenario is confirming the submission of the page to the server. We ask the user if she wants to submit the page, and if a negative answer is received, we cancel the clicking event. Here is the code:

> caption Example 1: Handling OnClientClicking event in RadToggleButton.

```ASP.NET
<script type="text/javascript">
	function Clicking(sender, args)
	{
		args.set_cancel(!window.confirm("Are you sure?"));
	}
</script>
<telerik:RadToggleButton ID="RadToggleButton1" runat="server" OnClientClicking="Clicking" OnClick="RadToggleButton1_Click">
	<ToggleStates>
	    <telerik:ButtonToggleState Text="State 1" />
	    <telerik:ButtonToggleState Text="State 2" />
	</ToggleStates>
</telerik:RadToggleButton>
```

```C#
protected void RadToggleButton1_Click(object sender, System.EventArgs e)
{
	RadToggleButton1.Text = "RadToggleButton was clicked at: " + DateTime.Now.ToString();
}
```

```VB
Protected Sub RadToggleButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
	RadToggleButton1.Text = "RadToggleButton was clicked at: " + DateTime.Now.ToString
End Sub
```

## See Also

* [PushButton - Client-side Events Demo](https://demos.telerik.com/aspnet-ajax/togglebutton/client-side-api/client-side-events/defaultcs.aspx)

* [PushButton Object](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/togglebutton-object)

* [OnClientLoad](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/events/onclientload)

* [OnClientToggleStateChanging](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/events/onclienttogglestatechanging)

* [OnClientToggleStateChanged](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/events/onclienttogglestatechanged)

* [OnClientClicked](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/events/onclientclicked)

* [OnClientMouseOver](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/events/onclientmouseover)

* [OnClientMouseOut](https://www.telerik.com/products/aspnet-ajax/documentation/controls/togglebutton/client-side-programming/events/onclientmouseout)

* [Telerik.Web.UI.ButtonCancelEventArgs](https://docs.telerik.com/devtools/aspnet-ajax/api/client/args/Telerik.Web.UI.ButtonCancelEventArgs)