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 that Signature object does not dispose passed stream.

The following are the steps to be followed:

  • Obtain document stream; 
  • Pass opened stream to Signature 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 our GitHub examples:

Free Online App 

Along with full-featured .NET library we provide simple, but powerful free Apps.
You are welcome to eSign PDF, Word, Excel, PowerPoint documents with free to use online GroupDocs Signature App.