PdfAcroFormRadioGroupField.AddButton Method

Name	Parameters	Description
AddButton(String, PdfRectangle)	name, rect	Adds a radio button to the radio group field. The button is added to the page where the form field is located.
AddButton(String, Int32, PdfRectangle)	name, pageNumber, rect	Adds a radio button to the radio group field. Allows you to specify a page where the button should be located.