Gets or sets the name of the group to which the button belongs.
A string value specifying the name of the group to which the button belongs.
Use the GroupName property to specify a group of buttons, to create a mutually exclusive set of buttons. You can use the GroupName property when only one selection is possible from a list of available options.
When this property is set, only one button in the specified group can be checked at a time. A button's checked state is controlled by its ButtonSettings.Checked property or the ASPxClientButton.SetChecked client method.
Any other suggestions? Tell us here.