ワークシートに署名行を追加
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紹介
Aspose.Cellsは、ワークシートの署名行を追加するためのPicture.SignatureLineプロパティを提供します。
ワークシートに署名行を追加する方法
次のサンプルコードは、Picture.SignatureLineプロパティを使用してワークシートの署名行を追加する方法を示しています。スクリーンショットは、コードの実行後にサンプルExcelファイルに与える効果を示しています。
サンプルコード
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// 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"); |