iTextSharp.text.pdf.PdfFormField.AddKid C# (CSharp) Метод

        public void AddKid(PdfFormField field)
        {
            field.parent = this;
            if (kids == null)
                kids = new List<PdfFormField>();
            kids.Add(field);
        }

        public PdfFormField AddRadioButton(PdfFormField radiogroup, string value, float llx, float lly, float urx, float ury)
        {
            PdfFormField radio = PdfFormField.CreateEmpty(writer);

            radio.SetWidget(new Rectangle(llx, lly, urx, ury), PdfAnnotation.HIGHLIGHT_TOGGLE);
            string name = ((PdfName)radiogroup.Get(PdfName.V)).ToString().Substring(1);

            if (name.Equals(value))
            {
                radio.AppearanceState = value;
            }
            else
            {
                radio.AppearanceState = "Off";
            }
            DrawRadioAppearences(radio, value, llx, lly, urx, ury);
            radiogroup.AddKid(radio);
            return(radio);
        }