.NET Core：多样的宿主

　　 .NET Core 可以以以下方式作为宿主运行：

1. IIS
2. 控制台
3. Windows服务

　　运行启动代码：

        public static void Main(string[] args)

        {

            try

            {

                LogCenter.Info("系统启动");

                LoadConfig();

                bool isService = !(Debugger.IsAttached ||  args.Contains("--console"));

                if (isService)

                {

                    CreateWebHostBuilder(args).Build().RunAsService();

                }

                else

                {

                    CreateWebHostBuilder(args).Build().Run();

                }

            }

            catch (Exception ex)

            {

                LogCenter.Error(ex);

            }

        }