Sign document with Barcode signature and additional settings

GroupDocs.Signature provides BarcodeSignOptions class to specify additional options for Barcode signature to specify following signature appearance

Here are the steps to add Barcode signature into document with GroupDocs.Signature:

This example shows how to add Barcode signature to document. See SignResult.

using (Signature signature = new Signature("sample.docx"))
    // create barcode option with predefined barcode text
    BarcodeSignOptions options = new BarcodeSignOptions("12345678")
        // setup Barcode encoding type
        EncodeType = BarcodeTypes.Code128,
        // set signature position
        Left = 100,
        Top = 100,
        // set signature alignment
        // when VerticalAlignment is set the Top coordinate will be ignored. 
        // Use Margin properties Top, Bottom to provide vertical offset
        VerticalAlignment = Domain.VerticalAlignment.Top,
        // when HorizontalAlignment is set the Left coordinate will be ignored. 
        // Use Margin properties Left, Right to provide horizontal offset
        HorizontalAlignment = Domain.HorizontalAlignment.Right,
        Margin = new Padding() { Top = 20, Right = 20 },
        // adjust signature appearance
        // setup signature border
        Border = new Border()
            Color = Color.DarkGreen,
            DashStyle = DashStyle.DashLongDashDot,
            Transparency = 0.5,
            Visible = true,
            Weight = 2
        // set text color and Font
        ForeColor = Color.Red,
        Font = new SignatureFont { Size = 12, FamilyName = "Comic Sans MS" },
        // specify position of text with barcode line
        CodeTextAlignment = CodeTextAlignment.Above,
        // setup background
        Background = new Background()
            Color = Color.LimeGreen,
            Transparency = 0.5,
            Brush = new LinearGradientBrush(Color.LimeGreen, Color.DarkGreen)
    // sign document to file
    SignResult signResult = signature.Sign("SampleSigned.docx", options);
    // analyzing result
    Console.WriteLine("List of newly created signatures:");
    int number = 1;
    foreach (BaseSignature temp in signResult.Succeeded)
        Console.WriteLine($"Signature #{number++}: Type: {temp.SignatureType} Id:{temp.SignatureId}, Location: {temp.Left}x{temp.Top}. Size: {temp.Width}x{temp.Height}");

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.