How to remove PDF annotations including comments in a document in C# .NET Framework

Removing PDF annotations in .NET Framework is a piece of cake with the help of an API, as you will soon see.

Installation is our first step, requiring this command to be entered into the console of Package Manager.

Install-Package Cloudmersive.APIClient.NET.DocumentAndDataConvert -Version 2.2.0

To proceed, we need to run our PDF file through EditPdfRemoveAllAnnotations, shown here:

using System;
using System.Diagnostics;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Api;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Client;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Model;
namespace Example
{
public class EditPdfRemoveAllAnnotationsExample
{
public void main()
{
// Configure API key authorization: Apikey
Configuration.Default.AddApiKey("Apikey", "YOUR_API_KEY");
// Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
// Configuration.Default.AddApiKeyPrefix("Apikey", "Bearer");
var apiInstance = new EditPdfApi();
var inputFile = new System.IO.Stream(); // System.IO.Stream | Input file to perform the operation on.
try
{
// Remove all PDF annotations, including comments in the document
byte[] result = apiInstance.EditPdfRemoveAllAnnotations(inputFile);
Debug.WriteLine(result);
}
catch (Exception e)
{
Debug.Print("Exception when calling EditPdfApi.EditPdfRemoveAllAnnotations: " + e.Message );
}
}
}
}

Easy! Our document will be returned to us, sans annotations and comments. For more helpful API functions like this and how to use them, check out the rest of this tutorial series.