You can create and remove PDF forms and control the fields on it.

// Add an AcroForm to a PDF document.
igDocument.CreateForm();

// Delete an AcroForm from a PDF document.
igDocument.RemoveForm();

This section provides information about the following:

• Traverse Form Fields
• Read and Write Form Field Values
• Add a New Form Field
• Modify Field Appearance
• Widget Annotations in Form Fields
• Flatten Form Fields
• XFA Support