Add link annotation
Link annotation adds a hyper link to document like shown at the picture below.
There is an ability to specify the next properties for LinkAnnotation type:
Follow these steps to add Underline annotation to document:
- Instantiate Annotator objectwith input document path or stream;
- Instantiate LinkAnnotation object with desired properties (position, page number, etc);
- Call Add method and pass LinkAnnotation object;
- Call Save method with resultant document path or stream.
The following code demonstrates how to add LinkAnnotation to the document:
//Add link annotation to the document from local disk
using (Annotator annotator = new Annotator("input.pdf"))
{
LinkAnnotation link= new LinkAnnotation
{
Url = "https://www.groupdocs.com/",
CreatedOn = DateTime.Now,
Message = "This is link annotation",
PageNumber = 0,
Points = new List<Point>
{
new Point(80, 730), new Point(240, 730), new Point(80, 650), new Point(240, 650)
},
Replies = new List<Reply>
{
new Reply
{
Comment = "First comment",
RepliedOn = DateTime.Now
},
new Reply
{
Comment = "Second comment",
RepliedOn = DateTime.Now
}
}
};
annotator.Add(link);
annotator.Save("result.pdf");
}
More resources
Advanced Usage Topics
To learn more about document annotating features, please refer to the advanced usage section.
GitHub Examples
You may easily run the code above and see the feature in action in our GitHub examples:
- GroupDocs.Annotation for .NET examples, plugins, and showcase
- GroupDocs.Annotation for Java examples, plugins, and showcase
- Document Annotation for .NET MVC UI Example
- Document Annotation for .NET App WebForms UI Modern Example
- Document Annotation for Java App Dropwizard UI Modern Example
- Document Annotation for Java Spring UI Example
Free Online App
Along with full-featured .NET library we provide simple but powerful free Apps. You are welcome to annotate your PDF, DOC or DOCX, XLS or XLSX, PPT or PPTX, PNG and other documents with free to use online GroupDocs Annotation App.