从 Visual Studio 2019 运行控制台应用程序时如何加载 usersecrets 文件

Question

This must be a stupid questions..

In my launchsettings.json I have tried

"environmentVariables": {
      "environment": "Development",
      "ASPNETCORE_ENVIRONMENT": "Development",
      "NETCORE_ENVIRONMENT": "Development"
}

And when I look at the "environment provider" these values exists in the environment.

Trying to use the UserSecrets feature, but the docs says that this file will only be added if the environment is set to Development .

And looking at the

HostBuilderContext.HostingEnvironment.EnvironmentName

It says "Production".. where can I set this value.......argh.. :(

I'm not able to find any documentation on this. But probably I'm missing something simple.

Some more info

Program.cs

using Microsoft.Extensions.Hosting;
using System;

namespace TestEnv
{
    class Program
    {
        static void Main(string[] args)
        {

            var builder = CreateHostBuilder(args).Build();


        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>

           Host.CreateDefaultBuilder(args).ConfigureServices((HostBuilderContext, services) =>
            {
                Console.WriteLine(HostBuilderContext.HostingEnvironment.EnvironmentName);

            });
    }
}

launchsettngs.json

{
  "profiles": {
    "TestEnv": {
      "commandName": "Project",
      "environmentVariables": {
        "ENVIRONMENT": "Development"
      }
    }
  }
}

The output HostBuilderContext.HostingEnvironment.EnvironmentName is Production

launchsettings.json

{
  "profiles": {
    "TestEnv": {
      "commandName": "Project",
      "commandLineArgs": "environment=Development",
      "environmentVariables": {

      }
    }
  }
}

The output HostBuilderContext.HostingEnvironment.EnvironmentName is Development

And the UserSecrets file is loaded.

Answer 1

The structure of a launchSettings.json :

{
  "profiles": {
    "My.ConsoleApp": {
      "commandName": "Project",
      "environmentVariables": {
        "ENVIRONMENT": "Development"
      }
    }
  }
}

Or in Visual Studio right click on your project (not solution) and choose properties. From left menu pick Debug and then you also can write the Environment variables.