Creating a Functional Image Gallery in ASP.NET Core MVC

An image gallery is a common feature in many web applications, allowing users to upload, view, and manage media content efficiently. ASP.NET Core MVC provides a robust framework for building these features, offering built-in support for file handling and security.

This article guides you through the essential logic required to build an image gallery that supports Uploading, Downloading, and Deleting images using the file system or a database.

Core Features of the App

Step 1: Image Upload

Using IFormFile to process multipart form data and save images to the wwwroot folder.

Step 2: Gallery View

Retrieving file paths from the database and rendering them in a responsive Bootstrap grid.

In addition to viewing, we implement a Download feature using FileResult to serve the images back to the user with the correct MIME types, and a Delete function that cleans up both the database record and the physical file on the server.