IIS: Configure ASP.NET Core environment variables using different configuration files

Jun 5, 2024#IIS #ASP.NET Core25

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Different environments require different configuration files, which can be set using environment variables in ASP.NET Core. The standard environment names are Development, Staging, and Production, but custom names can also be used. The corresponding configuration files are appsettings.{Environment}.json. For IIS, environment variables can be configured using the method described in this link: https://stackoverflow.com/questions/31049152/publish-to-iis-setting-environment-variable.

Expect to use different configuration files in different environments, there are many ways to do this, refer to: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/environments?view=aspnetcore-8.0

The way I use is to configure the environment variable: ASPNETCORE_ENVIRONMENT, the default standard environment names are:

Development local
Staging testing
Production production

Of course, it can be set to any environment name, and their corresponding configuration files are appsettings.{Environment}.json (in today's asp.net core, the environment variable file for .AddJsonFile has been configured, no need to configure manually).

Then, because I am using IIS, the way to configure environment variables in IIS is: https://stackoverflow.com/questions/31049152/publish-to-iis-setting-environment-variable