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Getting Started

The following tutorial demonstrates how to set up a page with a RadToggleButton control and use its OnToggleStateChanged server event:

  1. In the default page of a new ASP.NET AJAX-enabled Web Application add a RadToggleButton control:

    ASP.NET

    <telerik:RadToggleButton ID="RadToggleButton1" runat="server">
    </telerik:RadToggleButton>  
    
  2. Add two states the user can switch between and set their Text, Value and CommandArgument properties so you can distinguish them on the server:

    ASP.NET

    <telerik:RadToggleButton runat="server" ID="RadToggleButton1">
        <ToggleStates>
            <telerik:ButtonToggleState Text="First state" Value="0" CommandArgument="arg1">
            </telerik:ButtonToggleState>
            <telerik:ButtonToggleState Text="Second State" Value="1" CommandArgument="arg2">
            </telerik:ButtonToggleState>
        </ToggleStates>
    </telerik:RadToggleButton>
    
  3. To hook to the OnToggleStateChanged server-side event of RadToggleButton add an attribute to the main control tag and add the method signature:

    ASP.NET

    <telerik:RadToggleButton runat="server" ID="RadToggleButton1" OnToggleStateChanged="RadToggleButton1_ToggleStateChanged">
        <ToggleStates>
            <telerik:ButtonToggleState Text="First state" Value="0" CommandArgument="arg1">
            </telerik:ButtonToggleState>
            <telerik:ButtonToggleState Text="Second State" Value="1" CommandArgument="arg2">
            </telerik:ButtonToggleState>
        </ToggleStates>
    </telerik:RadToggleButton>
    

    C#

    protected void RadToggleButton1_ToggleStateChanged(object sender, ToggleButtonStateChangedEventArgs e)
    {
    
    }
    

    VB

    Protected Sub RadToggleButton1_ToggleStateChanged(ByVal sender As Object, ByVal e As ToggleButtonStateChangedEventArgs)
    End Sub
    
  4. Add a Label control to write the information to:

    ASP.NET

    <asp:Label ID="Label1" Text="" runat="server" />
    
  5. Use the OnToggleStateChanged event handler to write information about the current button state:

    C#

    protected void RadToggleButton1_ToggleStateChanged(object sender, ToggleButtonStateChangedEventArgs e)
    {
        string data = string.Format("current text: {0}, current value {1}, current command argument: {2}",
                                     e.SelectedToggleState.Text, e.SelectedToggleState.Value, e.SelectedToggleState.CommandArgument);
        Label1.Text = data;
    }
    

    VB

    Protected Sub RadToggleButton1_ToggleStateChanged(sender As Object, e As ToggleButtonStateChangedEventArgs)
        Dim data As String = String.Format("current text: {0}, current value {1}, current command argument: {2}", _
                                             e.SelectedToggleState.Text, e.SelectedToggleState.Value, e.SelectedToggleState.CommandArgument)
        Label1.Text = data
    End Sub
    

See Also