Add resource redaction annotation

Resource redaction annotation fills black rectangle with fixed position (used if you want to hide some text) like shown at the picture below. 

There is an ability to specify the next properties for ResourcesRedactionAnnotation type:

  • Box – defines annotation position at document page;

Follow these steps to add Resource redaction annotation to document:

The following code demonstrates how to add ResourcesRedactionAnnotation to the document:

//Add resource redaction annotation to the document from local disk
using (Annotator annotator = new Annotator("input.pdf"))
{
	ResourcesRedactionAnnotation resourcesRedaction = new ResourcesRedactionAnnotation
    {
    	Box = new Rectangle(100, 100, 100, 100),
        CreatedOn = DateTime.Now,
        Message = "This is resources redaction annotation",
        PageNumber = 0,
        Replies = new List<Reply>
        {
        	new Reply
            {
            	Comment = "First comment",
                RepliedOn = DateTime.Now
            },
            new Reply
            {
            	Comment = "Second comment",
                RepliedOn = DateTime.Now
            }
        }
   };
   annotator.Add(resourcesRedaction);
   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:

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.