This guide shows you how to delete notes from PowerPoint using the C# REST API. You’ll discover how to remove all notes in a PowerPoint file with the C# Low‑Code API by leveraging a .NET‑based cloud SDK. The article includes sample code for deleting a note slide and demonstrates how to confirm that the notes have been successfully removed.

Prerequisite

• Create an account API credentials
• Download Aspose.Slides Cloud SDK for Dotnet to delete a note
• Set up a C# project with the above SDK for removing notes

Steps to Remove All Notes from PowerPoint with C# REST API

1. Initialize the API client using the SlidesApi class with credentials for removing notes
2. Upload the presentation with notes in it using the UploadFile() method
3. Call the DeleteNotesSlide() method using the uploaded file name and target slide number
4. Display the message to show that notes are deleted from the target slide
5. Download the updated presentation after deleting the notes

These steps describe how to delete notes in PowerPoint with C# REST Interface. Upload the target presentation to the cloud storage and call the DeleteNotesSlide() method by providing the file name and target slide. Repeat this process for all the slides in the presentation and save the output on the disk.

Code to Delete All Notes in PowerPoint with C# REST Interface

With this example you’ve seen how to delete notes in PowerPoint using the C# REST Interface. By checking the NotesSlide flag you can confirm whether a slide contains notes before and after the deletion, and the NotesSlideExists() method lets you quickly determine if a notes slide is present.

In this guide we’ve walked through the steps to delete notes from a PowerPoint presentation. When you’re ready to add notes instead, see our tutorial on Add Notes to PowerPoint Slide with C# REST API.