MVC
Web forms
Web forms Tutorials

AjaxRadioList

This control works exactly the same as the AjaxDropdown except it looks different, here's an example:

<o:AjaxRadioList runat="server" ID="Categories" Url="~/svc/aja.svc/CategoriesDropdown" Value="1"></o:AjaxRadioList>

AjaxDropdowns and AjaxRadioLists can easily use the same service methods for the Url.