You can find sample projects that demonstrate common Cloudinary use cases in .NET here:
Included are two sample projects:
This sample project uploads local and remote images to Cloudinary and generates URLs for applying various image transformations on the uploaded files.
A simple web application that allows you to uploads photos, maintain a database with references to them, list them with their metadata, and display them using various cloud-based transformations.
More information about Cloudinary's .NET integration can be found in the documentation below: