This sample shows how to use radio buttons in your PDF document with Docotic.Pdf library.
You can add radio buttons to your PDF document using PdfPage.AddRadioButton methods. These methods return an instance of the PdfRadionButton class.
The PdfRadioButton.ExportValue property is used to specify a value to be exported when a submit form action is activated. Look at the Use Submit and Reset form actions in PDF documents sample for more detail about the submit form action.