[How Do I:] Use the ASP.NET AJAX DropDown Control?
![[How Do I:] Use the ASP.NET AJAX DropDown Control?](https://sec.ch9.ms/ch9/002d/cf64aeb7-ca09-4dd5-895a-c1fdab70002d/aspnet26554_512.jpg)
The MutuallyExclusive control from the ASP.NET AJAX Control Toolkit enables the developer to configure a number of check boxes as mutually exclusive, which ensures the user may only check a single option. While a radio-button list provides similar behavior, the need for a check box to be clicked by the user makes the MutuallyExclusive control ideal for receiving confirmation from the user, such as accepting or not accepting terms of use.