In the “Create New ASP.NET Core Web Application” window, select .NET Core as the runtime and ASP.NET Core 3.1 (or later) from the drop-down list at the top.

Click Create. We’ll use this ASP.NET Core 6 Web API project to create a custom configuration provider in the subsequent sections of this article.

Creating Mock Data projects in .NET Core 2.1 for use in your ASP.NET Core Web API solutions Understanding and setting up Integration Testing to test your APIs externally for a fully tested ASP.NET ...