public virtual void WriteUtf8FieldNameAndValue()
{
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(destinationFolder + "writeUtf8FieldNameAndValue.pdf"));
PdfAcroForm form = PdfAcroForm.GetAcroForm(pdfDoc, true);
PdfTextFormField field = PdfTextFormField.CreateText(pdfDoc, new Rectangle(99, 753, 425, 15), "", "");
field.SetFont(PdfFontFactory.CreateFont(FONT, PdfEncodings.IDENTITY_H));
// لا
field.Put(PdfName.T, new PdfString("\u0644\u0627", PdfEncodings.UTF8));
// 福昕 福昕UTF8
field.Put(PdfName.V, new PdfString("\u798F\u6615 \u798F\u6615UTF8", PdfEncodings.UTF8));
field.RegenerateField();
form.AddField(field);
pdfDoc.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(destinationFolder + "writeUtf8FieldNameAndValue.pdf"
, sourceFolder + "cmp_writeUtf8FieldNameAndValue.pdf", destinationFolder, "diffFieldNameAndValue_"));
}