public class NoTrimAttribute : Attribute

    {

    }

    /// <summary>

    /// 自定义的“天空”模型绑定提供程序

    /// </summary>

    public class MyModelBinderProvider : IModelBinderProvider

    {

        public IModelBinder GetBinder(ModelBinderProviderContext context)

        {

            if (context == null)

                throw new ArgumentNullException(nameof(context));

            if (!context.Metadata.IsComplexType && context.Metadata.ModelType == typeof(string))

            {

                //简单类型

                var loggerFactory = (ILoggerFactory)context.Services.GetService(typeof(ILoggerFactory));

                return new SkySimpleTypeModelBinder(new SimpleTypeModelBinder(context.Metadata.ModelType, loggerFactory));

            }

            if (context.Metadata.IsComplexType && !context.Metadata.IsCollectionType)

            {

                //复杂类型

                var propertyBinders = context.Metadata.Properties

                    .ToDictionary(modelProperty => modelProperty, modelProperty => context.CreateBinder(modelProperty));

                var loggerFactory = (ILoggerFactory)context.Services.GetService(typeof(ILoggerFactory));

                return new SkyComplexTypeModelBinder(propertyBinders, loggerFactory);

            }

            return null;

        }

    }

    public class Startup

    {

        public Startup(IConfiguration configuration)

        {

            Configuration = configuration;

        }

        public IConfiguration Configuration { get; }

        public void ConfigureServices(IServiceCollection services)

        {

            services.Configure<CookiePolicyOptions>(options =>

            {

                // This lambda determines whether user consent for non-essential cookies is needed for a given request.

                options.CheckConsentNeeded = context => true;

            });

            //注册自定义的模型绑定

            services.AddControllersWithViews(

                options => options.ModelBinderProviders.Insert(, new MyModelBinderProvider())

            ).AddNewtonsoftJson();

            services.AddRazorPages();

        }

｝