public static void VerifyPDFSigned() { // ExStart:VerifyPDFSigned // The path to the documents directory. string dataDir = RunExamples.GetDataDir_AsposePdfFacades_SecuritySignatures(); PdfFileSignature pdfSign = new PdfFileSignature(); pdfSign.BindPdf(dataDir + "DigitallySign.pdf"); pdfSign.ContainsSignature(); // Any signatures? pdfSign.Close(); // ExEnd:VerifyPDFSigned }