In this how-to tutorial, you will learn the process to add reply to annotation in PDF using C#. This guide also contains the instructions to configure the annotation package to reply annotation in PDF using C#. You will easily learn how to add annotation into PDF and add replies to same annotation. Here are the detailed directions to create annotation replies into PDF along with sample code example.

Steps to Add Reply to Annotation in PDF using C#

1. Install GroupDocs.Annotation for .NET package from the NuGet to reply PDF annotation
2. Add reference to the GroupDocs.Annotation namespace to create annotation reply
3. Instantiate Annotator object with input document path
4. Instantiate User, AreaAnnotation, and Reply object(s)
5. Assign User object to Reply
6. Assign Reply object(s) to Replies collection of AreaAnnotation
7. Call Annotator.Add method and pass annotation object to it
8. Call Annotator.Save method with resultant document path

We have clarified all the essential steps to annotate PDF with reply in C# and save the resultant PDF to disk. You can start reply to annotation functionality by loading the input document using Annotator class, set annotation properties and finally save the resultant PDF to disk. Here is the code example to add replies to annotation.

Code to Add Reply to Annotation in PDF using C#

The above code example presents the functionality to insert reply to PDF annotation in C# and completed it by consuming some API calls of annotation library. Moreover, this C# code example can be executed on any common operating system that supports .NET like MS Windows, Linux, and Mac OS. Recently, we published an article on adding watermark in Word, have a look at how to add watermark in Word using C# guide for more information.