①安装包：
Microsoft.Extensions.DependencyInjection
②应用
主方法里面：
//接口 IService ,实现：Service ,方法：Execute();
var serviceProvider = new ServiceCollection()
.AddSingleton<IService，Service>()
.BuildServiceProvider();
var _service = serviceProvider.GetRequireService<IService>();
_service.Execute();
标签：Execute,依赖,service,serviceProvider,AspNetCore,var,控制台 From： https://www.cnblogs.com/jf-ace/p/17679192.html