In the “Create New ASP.Net Core Web Application” window, select .NET Core as the runtime and ASP.NET Core 2.2 (or later) from the drop-down list at the top. I’ll be using ASP.NET Core 3.0 here.

First off, let’s create an ASP.NET Core 7 Web API project in Visual Studio 2022. ... We’ll use this ASP.NET Core 7 Web API project to work with API key authentication in the sections below.