Underline form field value using itextsharp
问题 I have an application that uses itextsharp to fill PDF form fields. I got new requirement from the customer to allow underlining the fields values. I have read many posts including answers to questions in this site but I could't figure out a way to do it. Current my code does the following: Creates a PDFStamper instance Get the form fields using stamper.AcroFields property Set the field value using the AcroFields.SetFieldRichValue() method. But when I am opening the PDF the field is empty. I