Sign document with Text signature - advanced

GroupDocs.Signature provides TextSignOptions class to specify additional options for text signature to specify following signature appearance

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

  • Create new instance of Signature class and pass source document path as a constructor parameter.

  • Instantiate the TextSignOptions object with all required additional options .

  • Call Sign method of Signature class instance and pass TextSignOptions to it.

  • Analyze SignResult result to check newly created signatures if needed.

This example shows how to add Text signature to document with advanced setup and analyzing result of method. See SignResult

using (Signature signature = new Signature("sample.pdf"))
{
    TextSignOptions options = new TextSignOptions("John Smith")
    {
        // set signature position 
        Left = 100,
        Top = 100,
        // set signature rectangle
        Width = 100,
        Height = 30,
        // 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" },
        // setup background
        Background = new Background()
        {
            Color = Color.LimeGreen,
            Transparency = 0.5,
            Brush = new LinearGradientBrush(Color.LimeGreen, Color.DarkGreen)
        },
        // set rotation
        RotationAngle = 45,
        // set alternative signature implementation on document page
        SignatureImplementation = TextSignatureImplementation.Image
        
    };
    // set up shadow options for text
    TextShadow shadow = new TextShadow()
    {
        Color = Color.OrangeRed,
        Angle = 135,
        Blur = 5,
        Distance = 4,
        Transparency = 0.2
    };
    //add text shadow to signature extensions
    options.Extensions.Add(shadow);
    // sign document to file
    SignResult signResult = signature.Sign("signedSample.pdf", options);
    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.