Load document from Stream

There might be the case when your document is not physically located on the disk. Instead, you have the document in the form of a stream. In this case, to avoid the overhead of saving stream as a file on disk, GroupDocs.Signature enables you to work with document from streams directly. Please be aware thatΒ SignatureΒ object does not dispose passed stream.

The following are the steps to be followed:

  • Obtain document stream;
  • Pass opened stream toΒ SignatureΒ class constructor.

Following code snippet serves this purpose.

using (Stream stream = File.OpenRead("sample.pdf"))
{
    using (Signature signature = new Signature(stream))
    {
        QRCodeSignOptions options = new QRCodeSignOptions("JohnSmith")
        {
            EncodeType = QRCodeTypes.QR,
            Left = 100,
            Top = 100
        };
        // sign document to file
        signature.Sign("SampleSigned", options);
    }
}

More resources

GitHub Examples

You may easily run the code above and see the feature in action in ourΒ 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.