iTextSharp.text.pdf.PdfAcroForm.DrawSingleLineOfText C# (CSharp) Method

        public void DrawSingleLineOfText(PdfFormField field, string text, BaseFont font, float fontSize, float llx, float lly, float urx, float ury)
        {
            PdfAppearance tp = PdfAppearance.CreateAppearance(writer, urx - llx, ury - lly);
            PdfAppearance tp2 = (PdfAppearance)tp.Duplicate;
            tp2.SetFontAndSize(font, fontSize);
            tp2.ResetRGBColorFill();
            field.DefaultAppearanceString = tp2;
            tp.DrawTextField(0f, 0f, urx - llx, ury - lly);
            tp.BeginVariableText();
            tp.SaveState();
            tp.Rectangle(3f, 3f, urx - llx - 6f, ury - lly - 6f);
            tp.Clip();
            tp.NewPath();
            tp.BeginText();
            tp.SetFontAndSize(font, fontSize);
            tp.ResetRGBColorFill();
            tp.SetTextMatrix(4, (ury - lly) / 2 - (fontSize * 0.3f));
            tp.ShowText(text);
            tp.EndText();
            tp.RestoreState();
            tp.EndVariableText();
            field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
        }