Delete QR Code Signature from Document

Introduction

In this tutorial, we’ll guide you through the process of removing a QR code signature from a document using GroupDocs.Signature for .NET. Follow these step-by-step instructions to effectively delete QR code signatures.

Prerequisites

Before you begin, ensure you have the following prerequisites:

• GroupDocs.Signature for .NET: Make sure you have the GroupDocs.Signature library installed in your .NET project. You can download it from here.
• Document with QR Code Signature: Prepare a document containing QR code signatures that you want to delete.
• Basic Knowledge of C#: Familiarize yourself with C# programming language basics.

Importing Namespaces

Before diving into the code, import the necessary namespaces to your C# file:

using System;
using System.Collections.Generic;
using System.IO;
using GroupDocs.Signature;
using GroupDocs.Signature.Domain;
using GroupDocs.Signature.Options;

Step 1: Define File Paths

// The path to the documents directory.
string filePath = "sample_multiple_signatures.docx";
string fileName = Path.GetFileName(filePath);
// Define the output file path for the modified document.
string outputFilePath = Path.Combine("Your Document Directory", "DeleteQRCode", fileName);
// Copy the source file since the Delete method works with the same Document.
File.Copy(filePath, outputFilePath, true);

Step 2: Initialize Signature Object

using (Signature signature = new Signature(outputFilePath))
{
    // Create options for searching QR code signatures.
    QrCodeSearchOptions options = new QrCodeSearchOptions();
    // Search for QR code signatures in the document.
    List<QrCodeSignature> signatures = signature.Search<QrCodeSignature>(options);

Step 3: Check for Existence of QR Code Signature

    if (signatures.Count > 0)
    {
        // Get the first QR code signature found in the document.
        QrCodeSignature qrCodeSignature = signatures[0];

Step 4: Delete QR Code Signature

        // Delete the QR code signature from the document.
        bool result = signature.Delete(qrCodeSignature);
        if (result)
        {
            Console.WriteLine($"Signature with QR-Code '{qrCodeSignature.Text}' and encode type '{qrCodeSignature.EncodeType.TypeName}' was deleted from document ['{fileName}'].");
        }
        else
        {
            Helper.WriteError($"Signature was not deleted from the document! Signature with Barcode '{qrCodeSignature.Text}' and encode type '{qrCodeSignature.EncodeType.TypeName}' was not found!");
        }
    }
}

Congratulations! You’ve successfully removed the QR code signature from the document using GroupDocs.Signature for .NET.

Conclusion

In this tutorial, we learned how to delete a QR code signature from a document using GroupDocs.Signature for .NET. By following the provided steps, you can efficiently manage and manipulate signatures within your .NET applications.

FAQ’s

Can I delete multiple QR code signatures from a document?

Yes, you can modify the code to iterate through all QR code signatures and delete them accordingly.

Does GroupDocs.Signature support other types of signatures besides QR codes?

Yes, GroupDocs.Signature supports various signature types such as text, image, barcode, and more.

Is GroupDocs.Signature compatible with all document formats?

GroupDocs.Signature supports a wide range of document formats including PDF, Microsoft Word, Excel, PowerPoint, and more.

Can I customize the search options for signatures?

Yes, you can tailor the search options according to your requirements to locate specific signatures within the document.

Is there a trial version available for GroupDocs.Signature?

Yes, you can access a free trial version of GroupDocs.Signature from here.