第一曲-控制器简介

public class HomeController : Controller
    {
        // GET: Home
        public ActionResult Index()
        {
            return View();
        }
    }

// Summary:
    //     Represents the result of an action method.
    public abstract class ActionResult {
        // Summary:
        //     Initializes a new instance of the System.Web.Mvc.ActionResult class.
        protected ActionResult();

        // Summary:
        //     Enables processing of the result of an action method by a custom type that
        //     inherits from the System.Web.Mvc.ActionResult class.
        //
        // Parameters:
        //   context:
        //     The context in which the result is executed. The context information includes
        //     the controller, HTTP content, request context, and route data.
        public abstract void ExecuteResult(ControllerContext context);
    }

//
        // Summary:
        //     Creates a System.Web.Mvc.ViewResult object that renders a view to the response.
        //
        // Returns:
        //     The System.Web.Mvc.Controller.View() result that renders a view to the response.
        protected internal ViewResult View();

// Summary:
    //     Represents a class that is used to render a view by using an System.Web.Mvc.IView
    //     instance that is returned by an System.Web.Mvc.IViewEngine object.
    public class ViewResult:ViewResultBase {
        // Summary:
        //     Initializes a new instance of the System.Web.Mvc.ViewResult class.
        public ViewResult();

        // Summary:
        //     Gets the name of the master view (such as a master page or template) to use
        //     when the view is rendered.
        //
        // Returns:
        //     The name of the master view.
        public string MasterName { get; set; }

        // Summary:
        //     Searches the registered view engines and returns the object that is used
        //     to render the view.
        //
        // Parameters:
        //   context:
        //     The controller context.
        //
        // Returns:
        //     The object that is used to render the view.
        //
        // Exceptions:
        //   System.InvalidOperationException:
        //     An error occurred while the method was searching for the view.
        protected override ViewEngineResult FindView(ControllerContext context);
    }
}

// Summary:
    //     Represents a base class that is used to provide the model to the view and
    //     then render the view to the response.
    public abstract class ViewResultBase:ActionResult {
        // Summary:
        //     Initializes a new instance of the System.Web.Mvc.ViewResultBase class.
        protected ViewResultBase();

        // Summary:
        //     Gets the view data model.
        //
        // Returns:
        //     The view data model.
        public object Model { get; }
        //
        // Summary:
        //     Gets or sets the System.Web.Mvc.TempDataDictionary object for this result.
        //
        // Returns:
        //     The temporary data.
        public TempDataDictionary TempData { get; set; }
        //
        // Summary:
        //     Gets or sets the System.Web.Mvc.IView object that is rendered to the response.
        //
        // Returns:
        //     The view.
        public IView View { get; set; }
        //
        // Summary:
        //     Gets the view bag.
        //
        // Returns:
        //     The view bag.
        [Dynamic]
        public dynamic ViewBag { get; }
        //
        // Summary:
        //     Gets or sets the view data System.Web.Mvc.ViewDataDictionary object for this
        //     result.
        //
        // Returns:
        //     The view data.
        public ViewDataDictionary ViewData { get; set; }
        //
        // Summary:
        //     Gets or sets the collection of view engines that are associated with this
        //     result.
        //
        // Returns:
        //     The collection of view engines.
        public ViewEngineCollection ViewEngineCollection { get; set; }
        //
        // Summary:
        //     Gets or sets the name of the view to render.
        //
        // Returns:
        //     The name of the view.
        public string ViewName { get; set; }

        // Summary:
        //     When called by the action invoker, renders the view to the response.
        //
        // Parameters:
        //   context:
        //     The context that the result is executed in.
        //
        // Exceptions:
        //   System.ArgumentNullException:
        //     The context parameter is null.
        public override void ExecuteResult(ControllerContext context);
        //
        // Summary:
        //     Returns the System.Web.Mvc.ViewEngineResult object that is used to render
        //     the view.
        //
        // Parameters:
        //   context:
        //     The context.
        //
        // Returns:
        //     The view engine.
        protected abstract ViewEngineResult FindView(ControllerContext context);
    }