Add Code11 Barcode Signatures to PPT File in C#

using (Signature signature = new Signature("sample.ppt"))
{
    // Initialize barcode options with predefined barcode text
    BarcodeSignOptions options = new BarcodeSignOptions("JohnSmith")
    {
        // setup Barcode encoding type
        EncodeType = BarcodeTypes.Code11,

        // set signature position
        Left = 50,
        Top = 150,
        Width = 200,
        Height = 50
    };

    // Sign PPT file and save result 
    signature.Sign("signed.ppt", options);
}