ASP.NET Core Tutorial for Beginners
ASP.NET Core Fundamentals
Learn how to create app in ASP.NET Core using Visual Studio and the C# language.
Part 5
Json configuration files
The Properties node includes launchSettings.json file which includes Visual Studio profiles of debug settings.
ASP.NET Core configures app behavior based on the runtime environment using an environment variable.
Multiple appsettings.json in .net core without using an environment variable
To determine the runtime environment, ASP.NET Core reads from the following environment variables:
DOTNET_ENVIRONMENT
ASPNETCORE_ENVIRONMENT when the WebApplication.CreateBuilder method is called. The default ASP.NET Core web app templates call WebApplication.CreateBuilder. The ASPNETCORE_ENVIRONMENT value overrides DOTNET_ENVIRONMENT.