Signing with Stamp using GroupDocs.Signature

Introduction

In this tutorial, we’ll walk you through the process of signing a document with a stamp using GroupDocs.Signature for .NET. By following these step-by-step instructions, you’ll be able to add a stamp signature to your documents with ease.

Prerequisites

Before we begin, ensure you have the following prerequisites:

1. GroupDocs.Signature for .NET SDK: Download and install the SDK from the website.
2. Development Environment: Make sure you have a suitable development environment set up for .NET development.
3. Document to Sign: Prepare the document (e.g., PDF) that you want to sign with a stamp.

Importing Namespaces

Start by importing the necessary namespaces into your project:

using System;
using System.IO;
using System.Drawing;
using GroupDocs.Signature;
using GroupDocs.Signature.Domain;
using GroupDocs.Signature.Options;

Step 1: Load the Document

string filePath = "sample.pdf";
using (Signature signature = new Signature(filePath))
{
    // Your code goes here
}

Step 2: Set Stamp Sign Options

StampSignOptions options = new StampSignOptions()
{
    Left = 50,
    Top = 150,                    
    Width = 200,
    Height = 200
};

Step 3: Configure Stamp Appearance

StampLine outerLine = new StampLine();
outerLine.Text = " * European Union ";
outerLine.TextRepeatType = StampTextRepeatType.FullTextRepeat;
outerLine.Font.Size = 12;
outerLine.Height = 22;
outerLine.TextBottomIntent = 6;
outerLine.TextColor = Color.WhiteSmoke;
outerLine.BackgroundColor = Color.DarkSlateBlue;
options.OuterLines.Add(outerLine);
StampLine innerLine = new StampLine();
innerLine.Text = "John Smith";
innerLine.TextColor = Color.MediumVioletRed;
innerLine.Font.Size = 20;
innerLine.Font.Bold = true;
innerLine.Height = 40;
options.InnerLines.Add(innerLine);

Step 4: Sign the Document

string outputFilePath = Path.Combine("Your Document Directory", "SignWithStamp", fileName);
SignResult result = signature.Sign(outputFilePath, options);
Console.WriteLine($"\nSource document signed successfully with {result.Succeeded.Count} signature(s).\nFile saved at {outputFilePath}.");

Conclusion

Adding stamp signatures to your documents using GroupDocs.Signature for .NET is a straightforward process, as demonstrated in this tutorial. With the provided steps, you can easily enhance the security and authenticity of your documents.

FAQ’s

Can I customize the appearance of the stamp signature?

Yes, you can customize various aspects such as text, font, color, and positioning of the stamp signature according to your requirements.

Does GroupDocs.Signature support signing multiple document formats?

Yes, GroupDocs.Signature supports a wide range of document formats including PDF, Microsoft Word, Excel, PowerPoint, and more.

Is there a trial version available for GroupDocs.Signature?

Yes, you can access the free trial version from the website.

Can I add multiple signatures to a single document?

Absolutely, GroupDocs.Signature allows you to add multiple signatures, including stamps, text, images, and digital signatures, to a single document.

Where can I find support if I encounter any issues during implementation?

You can find support and assistance from the GroupDocs.Signature community forum here.