How to check a check box?

var reader = new iTextSharp.text.pdf.PdfReader(originalFormLocation); using (var stamper = new iTextSharp.text.pdf.PdfStamper(reader,ms)) { var formFields = stamper.AcroFields; formFields.SetField("IsNo", "1"); formFields.SetField("IsNo", "true"); formFields.SetField("IsNo", "On"); }

public String getCheckboxValue(String src, String name) throws IOException { PdfReader reader = new PdfReader(SRC); AcroFields fields = reader.getAcroFields(); // CP_1 is the name of a check box field String[] values = fields.getAppearanceStates("IsNo"); StringBuffer sb = new StringBuffer(); for (String value : values) { sb.append(value); sb.append('\n'); } return sb.toString(); }