Add highlight annotation Leave feedback
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Highlight annotation highlights and comments selected text as shown in the picture below:
You can set the following properties of the HighlightAnnotation class:
- BackgroundColor defines the annotation background color
- FontColor defines the color of annotation text
- Opacity - allows you to set the annotation opacity
- Points defines the annotation positions as an array of points
To add a highlight annotation, follow these steps:
- Instantiate the Annotator class. Specify the input document path or stream.
- Instantiate HighlightAnnotation class. Specify the appropriate properties (position, page number, etc).
- Call the Add method. Specify the HighlightAnnotation class.
- Call the Save method. Specify the output document path or stream.
The following code snippet shows how to add HighlightAnnotation to the document:
//Add highlight annotation to the document from local disk
using (Annotator annotator = new Annotator("input.pdf"))
{
HighlightAnnotation highlight = new HighlightAnnotation
{
BackgroundColor = 65535,
CreatedOn = DateTime.Now,
FontColor = 0,
Message = "This is highlight annotation",
Opacity = 0.5,
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(highlight);
annotator.Save("result.pdf");
}
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