public static void Main(string[] args)
{
var builder = new ConfigurationBuilder();
builder.AddJsonFile("appsettings.json");
builder.AddEnvironmentVariables();
var config = builder.Build();
builder.AddEntityFramework(options => options.UseSqlServer(config["Data:DefaultConnection:ConnectionString"]));
config = builder.Build();
Console.WriteLine("key1={0}", config["key1"]);
Console.WriteLine("key2={0}", config["key2"]);
Console.WriteLine("key3={0}", config["key3"]);
}
