Delete Signatures of the certain type Leave feedback

GroupDocs.Signature provides overloaded Delete method that accepts one SignatureType or list of them. Please be aware that this method modifies the same document that was passed to constructor of the Signature class.

Here are the steps to delete signature by specific type from the document with GroupDocs.Signature:

• Create new instance of Signature class and pass source document path or its stream as a constructor parameter;
• Call Signature object Delete method and pass certain SignatureType enumeration to it.

This example shows how to delete QR-Code signatures from the document.

using (Signature signature = new Signature("signed.pdf"))
{
    // deleting QR-Code signatures from the document
    DeleteResult result = signature.Delete(SignatureType.QrCode);
    if (result.Succeeded.Count > 0)
    {
        Console.WriteLine("Following QR-Code signatures were deleted:");                    
        int number = 1;
        foreach (QrCodeSignature temp in result.Succeeded)
        {
            Console.WriteLine($"Signature #{number++}: Type: {temp.SignatureType} Id:{temp.SignatureId}, Text: {temp.Text}");
        }
    }
    else
    {
        Helper.WriteError("No one QR-Code signature was deleted.");
    }
}

To learn more about document eSign features, please refer to the Advanced usage section.

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

• GroupDocs.Signature for .NET examples, plugins, and showcase
• GroupDocs.Signature for Java examples, plugins, and showcase
• Document Signature for .NET MVC UI Example
• Document Signature for .NET App WebForms UI Example
• Document Signature for Java App Dropwizard UI Example
• Document Signature for Java Spring UI Example

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.