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OnClientToggleStateChanged (toggleStateChanged client-side event)

The toggleStateChanged event is fired after the SelectedToggleState and the SelectedToggleStateIndex properties of the RadButton are changed. The event is triggered only if the ToggleType property is set to [Telerik.Web.UI].ButtonToggleType.CustomToggle. The user cannot cancel the event.

The event handler receives two parameters:

  1. The instance of the clicked RadButton control

  2. An eventArgs parameter of type Telerik.Web.UI.RadButtonCheckedEventArgs, containing the following properties and methods:

    • get_currentToggleState() - returns the current [Telerik.Web.UI].RadButtonToggleState object applied to the button.

    • get_commandName() - returns the value assigned to the RadButton's CommandName property

    • get_commandArgument() - returns the value assigned to the RadButton's CommandArgument property

This event is useful when the user wants to execute custom client code when the button changes its toggle state. For example, the following code shows one page in a RadWindow control when the tri-state checkbox is "Filled", another when the state is "Checked", and hides the window when unchecked.

<script type="text/javascript">
    function OpenWindows(sender, args)
        var oWnd = $find("<%=RadWindow1.ClientID %>");
        switch (args.get_currentToggleState().get_text())
            case "Telerik":
            case "Google":

<telerik:radbutton id="RadButton1" runat="server" text="Show/Hide Window" toggletype="CustomToggle"
    autopostback="false" onclienttogglestatechanged="OpenWindows">
        <telerik:RadButtonToggleState Text="Hide Windows" PrimaryIconCssClass="rbToggleCheckbox" />
        <telerik:RadButtonToggleState Text="Google" PrimaryIconCssClass="rbToggleCheckboxFilled" />
        <telerik:RadButtonToggleState Text="Telerik" PrimaryIconCssClass="rbToggleCheckboxChecked" />
<telerik:radwindow id="RadWindow1" runat="server"></telerik:radwindow>
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