Create a Visual Studio 2008 ASP .NET Web Site with one Web Form.
The Web Form consists of two parts. The first part is typical ASP .NET containing a RadioButtonList server control, Label server control and Button server control. Add three items to the Items collection of the RadioButtonList server control. Write an event handler that displays the selected value from the RadioButtonList server control in the Text property of the Label server control when the user clicks the Button server control.
The second part of the Web Form uses ASP .NET AJAX controls. From the AJAX Extensions tab of the ToolBox add a ScriptManager server control and an UpdatePanel server control to the Web Form. Inside the ContentTemplate element of the UpdatePanel server control add a standard RadioButtonList server control, Label server control and Button server control. Add three items to the Items collection of the RadioButtonList server control. Write an event handler that displays the selected value from the RadioButtonList server control in the Text property of the Label server control when the user clicks the Button server control.