Search for Text e-signatures

GroupDocs.Signature provides TextSearchOptions class to specify different options to search for Text electronic signatures within document.

Here are the steps to search for Text e-signatures using GroupDocs.Signature API:

  • Create new instance of Signature class and pass source document path as a constructor parameter;
  • Instantiate the TextSearchOptions object according to your requirements and specify additional search options (if needed);
  • Call Search method of Signature  class instance and pass TextSearchOptions to it.

This example shows how to search for Text e-signature in the document.

using (Signature signature = new Signature(sample.pdf))
{
    // setup search options
    TextSearchOptions searchOptions = new TextSearchOptions()
    {
        // search only page with specified number
        PageNumber = null,
        // specify as true to search all pages of a document
        AllPages = true,
        // specify text to search
        Text = "JS_",
        // specify text math type
        MatchType = TextMatchType.Contains
    };
    // search document
    List<TextSignature> signatures = signature.Search<TextSignature>(searchOptions);
    // output signatures
    foreach (TextSignature textSignature in signatures)
    {
        if (textSignature != null)
        {
            Console.Write($"Found Text signature: {textSignature.SignatureImplementation} with text {textSignature.Text}.");
            Console.WriteLine($"Location at {textSignature.Left}-{textSignature.Top}. Size is {textSignature.Width}x{textSignature.Height}.");
        }
    }
}

Advanced Usage Topics

To learn more about document eSign features, please refer to the advanced usage section.

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.