iTextSharp.text.pdf.RadioCheckField.GetField C# (CSharp) Метод

        protected PdfFormField GetField(bool isRadio)
        {
            PdfFormField field = null;
            if (isRadio)
                field = PdfFormField.CreateEmpty(writer);
            else
                field = PdfFormField.CreateCheckBox(writer);
            field.SetWidget(box, PdfAnnotation.HIGHLIGHT_INVERT);
            if (!isRadio) {
                field.FieldName = fieldName;
                if ((options & READ_ONLY) != 0)
                    field.SetFieldFlags(PdfFormField.FF_READ_ONLY);
                if ((options & REQUIRED) != 0)
                    field.SetFieldFlags(PdfFormField.FF_REQUIRED);
                field.ValueAsName = vchecked ? onValue : "Off";
                CheckType = TYPE_CHECK;
            }
            if (text != null)
                field.MKNormalCaption = text;
            if (rotation != 0)
                field.MKRotation = rotation;
            field.BorderStyle = new PdfBorderDictionary(borderWidth, borderStyle, new PdfDashPattern(3));
            PdfAppearance tpon = GetAppearance(isRadio, true);
            PdfAppearance tpoff = GetAppearance(isRadio, false);
            field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, onValue, tpon);
            field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Off", tpoff);
            field.AppearanceState = vchecked ? onValue : "Off";
            PdfAppearance da = (PdfAppearance)tpon.Duplicate;
            da.SetFontAndSize(RealFont, fontSize);
            if (textColor == null)
                da.SetGrayFill(0);
            else
                da.SetColorFill(textColor);
            field.DefaultAppearanceString = da;
            if (borderColor != null)
                field.MKBorderColor = borderColor;
            if (backgroundColor != null)
                field.MKBackgroundColor = backgroundColor;
            switch (visibility) {
                case HIDDEN:
                    field.Flags = PdfAnnotation.FLAGS_PRINT | PdfAnnotation.FLAGS_HIDDEN;
                    break;
                case VISIBLE_BUT_DOES_NOT_PRINT:
                    break;
                case HIDDEN_BUT_PRINTABLE:
                    field.Flags = PdfAnnotation.FLAGS_PRINT | PdfAnnotation.FLAGS_NOVIEW;
                    break;
                default:
                    field.Flags = PdfAnnotation.FLAGS_PRINT;
                    break;
            }
            return field;
        }