netcore -獲取環境變量

注意：新建的環境變量需要重新啓動電腦後纔可以取到 

using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
           
            IConfiguration configuration = new ConfigurationBuilder().SetBasePath(Environment.CurrentDirectory)
                .AddEnvironmentVariables().Build();         

            var info = configuration["ASPNETCORE_ENVIRONMENT"];        
            Console.WriteLine(info);           
            Console.ReadLine();
        }
    }
}