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chinnumuniyappanchinnumuniyappan
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Merge pull request #268 from SyncfusionExamples/documentsdk-live-editor-pdf
Updated sample code for live editor
2 parents 0bd083d + 68aef4d commit 11f9b87

8 files changed

Lines changed: 73 additions & 82 deletions

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‎Digital Signature/Digital-Signature-Validation/.NET/Digital-Signature-Validation/Digital-Signature-Validation.csproj‎

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<PackageReference Include="Syncfusion.Pdf.Net.Core" Version="*" />
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</ItemGroup>
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<ItemGroup>
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<None Update="Data\Input.pdf">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Data\Intermediate0.cer">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Data\Intermediate1.cer">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Data\Root.cer">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Output\gitkeep.txt">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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</ItemGroup>
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</Project>

‎Digital Signature/Digital-Signature-Validation/.NET/Digital-Signature-Validation/Program.cs‎

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using System.Security.Cryptography.X509Certificates;
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using System.Text;
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string dataPath = Path.GetFullPath(@"Data/");
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// Load signed PDF document
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//Open the signed PDF document.
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using PdfLoadedDocument ldoc = new PdfLoadedDocument(Path.GetFullPath(@"Data/Input.pdf"));
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// Get signature field
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//Retrieve the signature field from the document form.
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PdfLoadedSignatureField lSigFld = ldoc.Form.Fields[0] as PdfLoadedSignatureField;
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// Root and Intermediate Certificates
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//Create a collection to store the root and intermediate certificates.
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X509CertificateCollection collection = new X509CertificateCollection();
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string[] certificates =
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{
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"Root.cer",
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"Intermediate0.cer",
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"Intermediate1.cer"
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};
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//Load certificates and add them to the certificate collection.
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foreach (string certFile in certificates)
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{
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byte[] certData = File.ReadAllBytes(Path.Combine(dataPath, certFile));
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X509Certificate2 certificate = new X509Certificate2(certData);
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collection.Add(certificate);
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collection.Add(new X509Certificate2(File.ReadAllBytes(Path.GetFullPath(@"Data/" + certFile))));
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}
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// Validate signature
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//Verify the digital signature using the certificate chain.
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PdfSignatureValidationResult result = lSigFld.ValidateSignature(collection);
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StringBuilder builder = new StringBuilder();
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builder.AppendLine("Signature is " + result.SignatureStatus);
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builder.AppendLine();
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builder.AppendLine("----------Validation Summary----------");
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builder.AppendLine();
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// Modified check
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//Check whether the signed document has been modified.
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if (result.IsDocumentModified)
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{
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builder.AppendLine("The document has been altered or corrupted since the signature was applied.");
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{
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builder.AppendLine("The document has not been modified since the signature was applied.");
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}
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// Certificate details
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//Add signer certificate information to the report.
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builder.AppendLine("Digitally signed by: " + lSigFld.Signature.Certificate.IssuerName);
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builder.AppendLine("Valid From: " + lSigFld.Signature.Certificate.ValidFrom);
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builder.AppendLine("Valid To: " + lSigFld.Signature.Certificate.ValidTo);
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builder.AppendLine("Signature Algorithm: " + result.SignatureAlgorithm);
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builder.AppendLine("Hash Algorithm: " + result.DigestAlgorithm);
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// Revocation details
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//Include revocation status details.
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builder.AppendLine("OCSP Revocation Status: " + result.RevocationResult.OcspRevocationStatus);
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if (result.RevocationResult.OcspRevocationStatus == RevocationStatus.None && result.RevocationResult.IsRevokedCRL)
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{
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builder.AppendLine("CRL is revoked.");
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}
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builder.AppendLine();
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builder.AppendLine("--------Revocation Information---------");
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builder.AppendLine();
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//Extract OCSP and CRL validation details for each signer certificate.
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foreach (PdfSignerCertificate signerCertificate in result.SignerCertificates)
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{
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if (signerCertificate.OcspCertificate != null)
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{
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builder.AppendLine("------------OCSP Certificate-------------");
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foreach (X509Certificate2 item in signerCertificate.OcspCertificate.Certificates)
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{
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builder.AppendLine("The OCSP Response was signed by: " + item.SubjectName.Name);
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}
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builder.AppendLine("Is Embedded: " + signerCertificate.OcspCertificate.IsEmbedded);
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builder.AppendLine("Valid From: " + signerCertificate.OcspCertificate.ValidFrom);
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builder.AppendLine("Valid To: " + signerCertificate.OcspCertificate.ValidTo);
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builder.AppendLine();
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}
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if (signerCertificate.CrlCertificate != null)
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{
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builder.AppendLine("------------CRL Certificate--------------");
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foreach (X509Certificate2 item in signerCertificate.CrlCertificate.Certificates)
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{
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builder.AppendLine("The CRL was signed by: " + item.SubjectName.Name);
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}
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builder.AppendLine("Is Embedded: " + signerCertificate.CrlCertificate.IsEmbedded);
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builder.AppendLine("Valid From: " + signerCertificate.CrlCertificate.ValidFrom);
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builder.AppendLine("Valid To: " + signerCertificate.CrlCertificate.ValidTo);
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builder.AppendLine();
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}
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}
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//Save to file
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File.WriteAllText(Path.GetFullPath(@"Output/Output.txt"),builder.ToString());
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//Write the validation report to a text file.
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File.WriteAllText(Path.GetFullPath(@"Output/Output.txt"), builder.ToString());

‎Digital Signature/Multiple-digital-signature/.NET/Multiple-digital-signature/Program.cs‎

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// Open the existing PDF document.
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PdfLoadedDocument loadedDocument = new PdfLoadedDocument(Path.GetFullPath(@"Data/SignatureFields.pdf"));
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// Retrieve the first page from the PDF document.
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PdfLoadedPage page = loadedDocument.Pages[0] as PdfLoadedPage;
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// Access the first signature field available in the PDF form.
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PdfLoadedSignatureField signatureField1 = loadedDocument.Form.Fields[0] as PdfLoadedSignatureField;
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// Create a certificate object using the PFX file and its password.
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PdfCertificate certificate1 = new PdfCertificate(Path.GetFullPath(@"Data/PDF.pfx"), "syncfusion");
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// Digitally sign the first signature field.
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signatureField1.Signature = new PdfSignature(loadedDocument, page, certificate1, "Signature1", signatureField1);
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// Load the signature image for the first signer.
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FileStream imageStream1 = new FileStream(Path.GetFullPath(@"Data/Student Signature.jpg"), FileMode.Open, FileAccess.Read);
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PdfBitmap signatureImage = new PdfBitmap(imageStream1);
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// Render the signature image within the signature field appearance.
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signatureField1.Signature.Appearance.Normal.Graphics.DrawImage(signatureImage, 0, 0, signatureField1.Bounds.Width, signatureField1.Bounds.Height);
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// Save the signed PDF into a memory stream.
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MemoryStream stream = new MemoryStream();
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loadedDocument.Save(stream);
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// Close the original PDF document instance.
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loadedDocument.Close(true);
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// Reopen the partially signed PDF from the memory stream.
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PdfLoadedDocument signedDocument = new PdfLoadedDocument(stream);
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// Retrieve the first page of the signed document.
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PdfLoadedPage loadedPage = signedDocument.Pages[0] as PdfLoadedPage;
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// Access the second signature field in the PDF form.
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PdfLoadedSignatureField signatureField2 = signedDocument.Form.Fields[1] as PdfLoadedSignatureField;
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// Apply a digital signature to the second signature field.
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signatureField2.Signature = new PdfSignature(signedDocument, loadedPage, certificate1, "Signature2", signatureField2);
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// Load the signature image for the second signer.
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FileStream imageStream2 = new FileStream(Path.GetFullPath(@"Data/Teacher Signature.png"), FileMode.Open, FileAccess.Read);
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PdfBitmap signatureImage1 = new PdfBitmap(imageStream2);
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// Display the signature image in the second signature field appearance.
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signatureField2.Signature.Appearance.Normal.Graphics.DrawImage(signatureImage1, 0, 0, signatureField2.Bounds.Width, signatureField2.Bounds.Height);
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// Save the fully signed PDF document.
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signedDocument.Save(Path.GetFullPath(@"Output/Output.pdf"));
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// Close the signed PDF document.
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signedDocument.Close(true);

‎OCR/.NET/Perform-OCR-on-PDF-with-multiple-languages/Perform-OCR-on-PDF-with-multiple-languages/Perform-OCR-on-PDF-with-multiple-languages.csproj‎

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<PackageReference Include="Syncfusion.PDF.OCR.Net.Core" Version="*" />
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</ItemGroup>
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<ItemGroup>
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<None Update="Data\ARIALUNI.ttf">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Data\Input.pdf">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Output\gitkeep.txt">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Tessdata\ara.traineddata">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Tessdata\deu.traineddata">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Tessdata\ell.traineddata">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Tessdata\eng.traineddata">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Tessdata\fra.traineddata">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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<None Update="Tessdata\grc.traineddata">
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
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</None>
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</ItemGroup>
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</Project>

‎OCR/.NET/Perform-OCR-on-PDF-with-multiple-languages/Perform-OCR-on-PDF-with-multiple-languages/Program.cs‎

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using Syncfusion.Pdf.Graphics;
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using Syncfusion.Pdf.Parsing;
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// Load the PDF document
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//Open the existing PDF document.
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using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument(Path.GetFullPath(@"Data/Input.pdf")))
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{
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// Initialize OCR processor
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//Create an OCR processor instance.
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OCRProcessor processor = new OCRProcessor();
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//Sets Unicode font to preserve the Unicode characters in a PDF document.
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//Assign a Unicode font to retain multilingual characters in the OCR output PDF.
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processor.UnicodeFont = new PdfTrueTypeFont(Path.GetFullPath(@"Data/ARIALUNI.ttf"), 8);
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// Set OCR language
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//Specify the languages to be recognized during OCR processing.
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processor.Settings.Language = "eng+deu+ara+ell+fra"; // English, German, Arabic, Greek, French
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// Set the path to the Tesseract language data folder
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//Set the directory containing Tesseract language data files.
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processor.TessDataPath = Path.GetFullPath(@"Tessdata");
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// Perform OCR
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//Run OCR on the PDF document and make its content searchable.
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processor.PerformOCR(loadedDocument);
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// Save the PDF document
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//Save the OCR-processed PDF to the output location.
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loadedDocument.Save(Path.GetFullPath(@"Output/Output.pdf"));
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}

‎OCR/.NET/Perform-OCR-on-image-file/Perform-OCR-on-image-file/Data/ARIALUNI.TTF‎

-23 MB
Binary file not shown.

‎OCR/.NET/Perform-OCR-on-image-file/Perform-OCR-on-image-file/Perform-OCR-on-image-file.csproj‎

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</ItemGroup>
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<ItemGroup>
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<None Update="Data\ARIALUNI.TTF">
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<CopyToOutputDirectory>Always</CopyToOutputDirectory>
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</None>
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<None Update="Data\Input.jpg">
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<CopyToOutputDirectory>Always</CopyToOutputDirectory>
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</None>

‎OCR/.NET/Perform-OCR-on-image-file/Perform-OCR-on-image-file/Program.cs‎

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using Syncfusion.OCRProcessor;
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using Syncfusion.Pdf.Graphics;
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//Initialize the OCR processor by providing the path of the tesseract binaries.
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//Create an OCR processor instance.
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using (OCRProcessor processor = new OCRProcessor())
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{
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//Get stream from the image file.
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//Open the input image as a file stream.
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FileStream stream = new FileStream(Path.GetFullPath(@"Data/Input.jpg"), FileMode.Open);
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//Set OCR language to process.
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//Specify English as the language for text recognition.
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processor.Settings.Language = Languages.English;
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//Sets Unicode font to preserve the Unicode characters in a PDF document.
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FileStream fontStream = new FileStream(Path.GetFullPath(@"Data/ARIALUNI.ttf"), FileMode.Open);
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processor.UnicodeFont = new PdfTrueTypeFont(fontStream, 8);
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//Perform the OCR process for an image steam.
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//Extract text from the image using the OCR engine and tessdata path.
1911
string ocrText = processor.PerformOCR(stream, processor.TessDataPath);
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System.IO.File.WriteAllText(Path.GetFullPath(@"Output/Output.txt"), ocrText);
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//Save the recognized text to a text file.
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File.WriteAllText(Path.GetFullPath(@"Output/Output.txt"), ocrText);
2214
}

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