GroupDocs.Signature 20.3.0

GroupDocs.Signature for .NET is a feature rich library which provides an ability to add stamps, barcodes and QR-codes, text, image, metadata, form field and digital signatures to documents of various formats like PDF, DOCX/DOC, PPTX/PPT, XLSX/XLS, VSDX/VSD, JPG, PNG, TIFF, HTML and many others.
Sign, create, search, verify document signatures for all popular document formats and set different signing options to suit your needs with GroupDocs.Signature for .NET API.

Features:
   * Document signatures
       - Digital - signatures based on a certificate file (supported by PDF, Spreadsheet, Words formats);
       - Barcode - adds barcode to document pages (over 60+ different types)
           * PostCodes;
           * Codabar;
           * Code128;
           * Code16K;
           * Code39;
           * Databar;
           * EAN;
           * ISBN;
           * VIN and others.
       - QR-code - adds QR-code to document pages with ability to embed encrypted data into QR-code
           * Aztec;
           * DataMatrix;
           * QR;
           * GS1DataMatrix;
           * GS1QR.
       - Metadata - inserts any data types as hidden document content in a document metadata in a dictionary manner with unique key;
       - Text - different type of text object like text stamp, labels, annotations, watermarks ;
       - Image - places an image to document page;
           * Text as image;
           * Image - various graphics, figures and polylines.
       - Stamp - adds various kind of stamps to document as different stamp shapes circle or rectangle;
       - Form Field - fills document form fields with provided data (for PDF documents only).
   * Search - returns a list of document signatures
       - Digital signatures for Pdf, Spreadsheet, Word documents;
       - Barcodes in all supported document types;
       - QR-codes in all supported document types with ability to decrypt embedded data into any object
       - Metadata signatures in all supported document types;
       - Form-field signatures in all supported document types.
   * Verify - checks that document contains signatures that meet the specified criteria. Supported signature types:
       - Text;
       - Digital;
       - Barcode;
       - QR-code.
   * Update - updates signatures in the documents. Supported signature types:
       - Text;
       - Image;
       - Barcode;
       - QR-code.
   * Delete - removes signatures from the documents. Supported signature types:
       - Text;
       - Image;
       - Barcode;
       - QR-code.
   * Styling - wide settings range for visualization effects such as text and image opacity, colors, fonts, rotation and other effects;
   * Document basic information - basic metadata for provided source document (size, page count, file type, created/modified dates etc.).

Supported document formats:
   * Portable Document Formats - PDF (PDF/A-1a, PDF/A-1b, PDF/A-2a)
   * Microsoft Word documents - DOC, DOCX, DOCM, DOT, DOTX, DOTM, RTF
   * Microsoft Excel spreadsheets - XLS, XLSX, XLSM, XLSB,
   * Microsoft PowerPoint presentations - PPT, PPTX, PPS, PPSX, PPTM, POTX, POTM, PPSM;
   * Open Document formats - ODT, OTT, ODS, OTS, ODP, OTP;
   * Image - TIFF, TIF, JPG, JPEG, PNG, GIF, BMP, ICO, JP2, J2C, J2K, JPF, JPX, JPM, WMF, EMF, WEBP, PSD;

For more details on the GroupDocs.Signature for .NET API, please visit product website at:
https://products.groupdocs.com/signature/net

Note: GroupDocs.Signature for .NET will run in evaluation mode. In order to test full features of the product, please request a free 30-day temporary license.

Install-Package GroupDocs.Signature -Version 20.3.0

dotnet add package GroupDocs.Signature --version 20.3.0

<PackageReference Include="GroupDocs.Signature" Version="20.3.0" />

paket add GroupDocs.Signature --version 20.3.0

#r "nuget: GroupDocs.Signature, 20.3.0"

using (Signature signature = new Signature("sample.pdf"))
{
    // create QRCode option with predefined QRCode text
    QRCodeSignOptions signOptions = new QRCodeSignOptions("JohnSmith")
    {
        EncodeType = QRCodeTypes.QR,
        Left = 100,
        Top = 100
    };
    PdfSaveOptions pdfSaveOptions = new PdfSaveOptions()
    {
        FileFormat = PdfSaveFileFormat.DocX,
        OverwriteExistingFiles = true
    };
    // sign document to file
    signature.Sign("SignedPdf.docx", signOptions, pdfSaveOptions);
}

// initialize Signature instance
using (Signature signature = new Signature("signed.docx"))
{
    BarcodeSearchOptions options = new BarcodeSearchOptions();
    List<BarcodeSignature> signatures = signature.Search<BarcodeSignature>(options);
    List<BaseSignature> signaturesToDelete = new List<BaseSignature>();
    // collect signatures to delete
    foreach (BarcodeSignature temp in signatures)
    {
        if (temp.Text.Contains("John"))
        {
            signaturesToDelete.Add(temp);
        }
    }
    // delete signatures
    DeleteResult deleteResult = signature.Delete(signaturesToDelete);
    if (deleteResult.Succeeded.Count == signaturesToDelete.Count)
    {
        Console.WriteLine("All signatures were successfully deleted!");
    }
    else
    {
        Console.WriteLine($"Successfully deleted signatures : {deleteResult.Succeeded.Count}");
        Console.WriteLine($"Not deleted signatures : {deleteResult.Failed.Count}");
    }
    Console.WriteLine("List of deleted signatures:");
    foreach (BaseSignature temp in deleteResult.Succeeded)
    {
        Console.WriteLine($"Signature# Id:{temp.SignatureId}, Location: {temp.Left}x{temp.Top}. Size: {temp.Width}x{temp.Height}");
    }
}

using (Signature signature = new Signature("sample.pdf"))
{
    // create QRCode option with predefined QRCode text
    QRCodeSignOptions signOptions = new QRCodeSignOptions("JohnSmith")
    {
        EncodeType = QRCodeTypes.QR,
        Left = 100,
        Top = 100
    };
    PdfSaveOptions pdfSaveOptions = new PdfSaveOptions()
    {
        FileFormat = PdfSaveFileFormat.DocX,
        OverwriteExistingFiles = true
    };
    // sign document to file
    signature.Sign("SignedPdf.docx", signOptions, pdfSaveOptions);
}

// initialize Signature instance
using (Signature signature = new Signature("signed.docx"))
{
    BarcodeSearchOptions options = new BarcodeSearchOptions();
    List<BarcodeSignature> signatures = signature.Search<BarcodeSignature>(options);
    List<BaseSignature> signaturesToDelete = new List<BaseSignature>();
    // collect signatures to delete
    foreach (BarcodeSignature temp in signatures)
    {
        if (temp.Text.Contains("John"))
        {
            signaturesToDelete.Add(temp);
        }
    }
    // delete signatures
    DeleteResult deleteResult = signature.Delete(signaturesToDelete);
    if (deleteResult.Succeeded.Count == signaturesToDelete.Count)
    {
        Console.WriteLine("All signatures were successfully deleted!");
    }
    else
    {
        Console.WriteLine($"Successfully deleted signatures : {deleteResult.Succeeded.Count}");
        Console.WriteLine($"Not deleted signatures : {deleteResult.Failed.Count}");
    }
    Console.WriteLine("List of deleted signatures:");
    foreach (BaseSignature temp in deleteResult.Succeeded)
    {
        Console.WriteLine($"Signature# Id:{temp.SignatureId}, Location: {temp.Left}x{temp.Top}. Size: {temp.Width}x{temp.Height}");
    }
}

Release Notes

https://docs.groupdocs.com/display/signaturenet/GroupDocs.Signature+for+.NET+20.3+Release+Notes

Dependencies

• .NETFramework 2.0

  • No dependencies.

• .NETStandard 2.0

  • Microsoft.Extensions.DependencyModel (>= 2.0.4)
  • Mono.Posix.NETStandard (>= 1.0.0)
  • Portable.BouncyCastle (>= 1.8.5.2)
  • SkiaSharp (>= 1.68.1.1)
  • System.Diagnostics.PerformanceCounter (>= 4.5.0)
  • System.Drawing.Common (>= 4.7.0)
  • System.Reflection.Emit (>= 4.7.0)
  • System.Reflection.Emit.ILGeneration (>= 4.7.0)
  • System.Security.Permissions (>= 4.5.0)
  • System.Text.Encoding.CodePages (>= 4.7.0)

Used By

Version History