Obtain document form fields and signatures information Leave feedback

list of the document form fields exposed as FormFieldSignature elements — the FormFields collection. This list will contain all Form Fields elements in the document no matter if these components were added by GroupDocs Signature or any other third party software. Please be aware only Pdf and Word processing documents support these elements.
list of Text Signatures previously added to document over Sign method or updated by Update method;
list of Image Signatures previously added to document over Sign method or updated by Update method;
list of DigitalSignature previously added to document over Sign method or updated by Update method;
list of BarcodeSignature previously added to document over Sign method or updated by Update method;
list of QrCodeSignature previously added to document over Sign method or updated by Update method;
list of FormFieldSignature previously added to document over Sign method or updated by Update method — the FormFieldSignatures collection, which unlike FormFields holds only the form-field signatures added through GroupDocs.Signature;
list of MetadataSignature previously added to document over Sign method — unlike the other signature types, metadata signatures cannot be modified by the Update method, so this collection reflects sign operations only;

Analyze document form fields and signatures information

The following code snippet demonstrates how to obtain information about document form fields, signatures and analyze them.

string filePath = "sampleSigned.pdf";
using (Signature signature = new Signature(filePath))
{
    IDocumentInfo documentInfo = signature.GetDocumentInfo();
    Console.WriteLine($"Document properties {Path.GetFileName(filePath)}:");
    Console.WriteLine($" - format : {documentInfo.FileType.FileFormat}");
    Console.WriteLine($" - extension : {documentInfo.FileType.Extension}");
    Console.WriteLine($" - size : {documentInfo.Size}");
    Console.WriteLine($" - page count : {documentInfo.PageCount}");
    foreach (PageInfo pageInfo in documentInfo.Pages)
    {
        Console.WriteLine($" - page-{pageInfo.PageNumber} Width {pageInfo.Width}, Height {pageInfo.Height}");
    }
    // display document Form Field signatures information
    Console.WriteLine($"Document Form Fields information: count = {documentInfo.FormFields.Count}");
    foreach (FormFieldSignature formField in documentInfo.FormFields)
    {
        Console.WriteLine($" - type #{formField.Type}: Name: {formField.Name} Value: {formField.Value}");
    }
    // display document Text signatures information
    Console.WriteLine($"Document Text signatures : {documentInfo.TextSignatures.Count}");
    foreach (TextSignature textSignature in documentInfo.TextSignatures)
    {
        Console.WriteLine($" - #{textSignature.SignatureId}: Text: {textSignature.Text}");
    }
    // display document Image signatures information
    Console.WriteLine($"Document Image signatures : {documentInfo.ImageSignatures.Count}");
    foreach (ImageSignature imageSignature in documentInfo.ImageSignatures)
    {
        Console.WriteLine($" - #{imageSignature.SignatureId}: Size: {imageSignature.Size} bytes, Format: {imageSignature.Format}.");
    }
    // display document Digital signatures information
    Console.WriteLine($"Document Digital signatures : {documentInfo.DigitalSignatures.Count}");
    foreach (DigitalSignature digitalSignature in documentInfo.DigitalSignatures)
    {
        Console.WriteLine($" - #{digitalSignature.SignatureId}.");
    }
    // display document Barcode signatures information
    Console.WriteLine($"Document Barcode signatures : {documentInfo.BarcodeSignatures.Count}");
    foreach (BarcodeSignature barcodeSignature in documentInfo.BarcodeSignatures)
    {
        Console.WriteLine($" - #{barcodeSignature.SignatureId}: Type: {barcodeSignature.EncodeType?.TypeName}. Text: {barcodeSignature.Text}");
    }
    // display document QrCode signatures information
    Console.WriteLine($"Document QR-Code signatures : {documentInfo.QrCodeSignatures.Count}");
    foreach (QrCodeSignature qrCodeSignature in documentInfo.QrCodeSignatures)
    {
        Console.WriteLine($" - #{qrCodeSignature.SignatureId}: Type: {qrCodeSignature.EncodeType?.TypeName}. Text: {qrCodeSignature.Text}");
    }
    // display document Form Fields signatures information
    Console.WriteLine($"Document Form Fields signatures : {documentInfo.FormFieldSignatures.Count}");
    foreach (FormFieldSignature formFieldSignature in documentInfo.FormFieldSignatures)
    {
        Console.WriteLine($" - #{formFieldSignature.SignatureId} Type {formFieldSignature.Type}: Name: {formFieldSignature.Name} Value: {formFieldSignature.Value}");
    }
    // display document Metadata signatures information
    Console.WriteLine($"Document Metadata signatures : {documentInfo.MetadataSignatures.Count}");
    foreach (MetadataSignature metadataSignature in documentInfo.MetadataSignatures)
    {
        Console.WriteLine($" - #{metadataSignature.Name} = {metadataSignature.Value}.Type:{metadataSignature.Type}");
    }
}

Note
GroupDocs.Signature also allows to add, search and read metadata signatures in documents.
To learn more about please refer to the following guide: Work with document metadata

More resources

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online Apps

Along with the full-featured .NET library, we provide simple but powerful free online apps.

To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.

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Obtain document form fields and signatures information Leave feedback

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Analyze document form fields and signatures information

More resources

GitHub Examples

Free Online Apps

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