Update Text signatures in document Leave feedback
GroupDocs.Signature provides TextSignature class to manipulate text signatures location, size and textual content.
Please be aware that Update method modifies the same document that was passed to constructor of Signature class.
Here are the steps to update Text signature in the document with GroupDocs.Signature:
- Create new instance of Signature class and pass source document path as a constructor parameter;
- Instantiate TextSearchOptions object with desired properties;
- Call Search method to obtain list of TextSignatures;
- Select from list TextSignature object(s) that should be updated;
- Call Signature object Update method and pass one or several signatures to it.
This example shows how to update Text signature that was found using Search method.
using (Signature signature = new Signature("sampleSigned.pdf"))
{
TextSearchOptions options = new TextSearchOptions();
// search for text signatures in document
List<TextSignature> signatures = signature.Search<TextSignature>(options);
if(signatures.Count > 0)
{
TextSignature textSignature = signatures[0];
// change Text property
textSignature.Text = "John Walkman";
// change position
textSignature.Left = textSignature.Left + 10;
textSignature.Top = textSignature.Top + 10;
// change size. Please note not all documents support changing signature size
textSignature.Width = 200;
textSignature.Height = 100;
bool result = signature.Update(textSignature);
if (result)
{
Console.WriteLine(
$"Signature with Text '{textSignature.Text}' " +
$"was updated in the document ['{fileName}']."
);
}
else
{
Console.WriteLine(
$"Signature was not updated in the document! " +
$"Signature with Text '{textSignature.Text}' was not found!"
);
}
}
}
To learn more about document eSign features, please refer to the advanced usage section.
You may easily run the code above and see the feature in action in our GitHub examples:
- GroupDocs.Signature for .NET examples, plugins, and showcase
- GroupDocs.Signature for Java examples, plugins, and showcase
- Document Signature for .NET MVC UI Example
- Document Signature for .NET App WebForms UI Example
- Document Signature for Java App Dropwizard UI Example
- Document Signature for Java Spring UI Example
Along with the full-featured .NET library, we provide simple but powerful free online apps.
To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.
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