Lägg till signaturrad i kalkylbladet

Möjliga användningsscenarier

Aspose.Cells tillhandahållerPicture.SignatureLine egenskap för att lägga till kalkylbladets signaturrad.

Lägg till signaturrad i kalkylbladet

Följande exempelkod visade hur man använder sig avPicture.SignatureLineegenskap för att lägga till kalkylbladets signaturrad. Skärmdumpen visar effekten av exempelkoden på exemplet i Excel-filen efter körning.

Exempelkod

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// Instantiating a Workbook object
Workbook wb = new Workbook();

SignatureLine signatureLine = new SignatureLine();
signatureLine.Id = Guid.NewGuid();
signatureLine.ProviderId = Guid.Empty;
signatureLine.Signer = "Aspose.Cells";
signatureLine.Title = "signed by Aspose.Cells";
wb.Worksheets[0].Shapes.AddSignatureLine(1, 1, signatureLine);

System.Security.Cryptography.X509Certificates.X509Certificate2 certificate = new System.Security.Cryptography.X509Certificates.X509Certificate2(dataDir + "rsa2048.pfx", "123456");
Aspose.Cells.DigitalSignatures.DigitalSignature signature =
    new Aspose.Cells.DigitalSignatures.DigitalSignature(certificate, "test Microsoft Office signature line", DateTime.UtcNow);
signature.Id = signatureLine.Id;
signature.ProviderId = signatureLine.ProviderId;


Aspose.Cells.DigitalSignatures.DigitalSignatureCollection dsCollection = new Aspose.Cells.DigitalSignatures.DigitalSignatureCollection();
dsCollection.Add(signature);
wb.SetDigitalSignature(dsCollection);
wb.Save(dataDir + "signatureLine.xlsx");