فرم های PDF قابل پر کردن از طریق C#

var inputFile = Path.Combine(dataDir, "sample.pdf");
var outputFile = Path.Combine(dataDir, "sample_fill_form.pdf");
var pdfDocument = new Aspose.Pdf.Document(inputFile);
if (pdfDocument.Form["textbox1"] is Aspose.Pdf.Forms.TextBoxField textBoxField)
{
    textBoxField.Value = "Some text value";            
    pdfDocument.Save(outputFile);
}