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An unhandled exception occurred while processing the request. ASP.Net C#

Автор вопроса: DanBit

Всем привет, решил начать изучать ASP.Net для примера взал проект с ютуба, сделал всё как по примеру, но выводит такую ошибку An unhandled exception occurred while processing the request. Также при преходе по /Car/List должен вывестить список автомобилей, но пишет 404. Подскажите что делать.

TypeLoadException: Could not load type 'System.Web.HttpContextBase' from assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. System.Signature.GetSignature(Void* pCorSig, int cCorSig, RuntimeFieldHandleInternal fieldHandle, IRuntimeMethodInfo methodHandle, RuntimeType declaringType) System.Reflection.RuntimePropertyInfo.get_Signature() System.Reflection.RuntimePropertyInfo.get_PropertyType() Microsoft.Extensions.Internal.PropertyHelper.IsRefStructProperty(PropertyInfo property) Microsoft.Extensions.Internal.PropertyHelper.IsInterestingProperty(PropertyInfo property) Microsoft.Extensions.Internal.PropertyHelper+<>c.b__42_0(PropertyInfo p) System.Linq.Enumerable+WhereSelectArrayIterator<TSource, TResult>.ToArray() System.Linq.Enumerable.ToArray(IEnumerable source) Microsoft.Extensions.Internal.PropertyHelper.GetProperties(Type type, Func<PropertyInfo, PropertyHelper> createPropertyHelper, ConcurrentDictionary<Type, PropertyHelper[]> cache) Microsoft.Extensions.Internal.PropertyHelper.GetProperties(Type type) Microsoft.AspNetCore.Mvc.ApplicationModels.DefaultApplicationModelProvider.OnProvidersExecuting(ApplicationModelProviderContext context) Microsoft.AspNetCore.Mvc.ApplicationModels.ApplicationModelFactory.CreateApplicationModel(IEnumerable controllerTypes) Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.GetDescriptors() Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.OnProvidersExecuting(ActionDescriptorProviderContext context) Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.UpdateCollection() Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.Initialize() Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.get_ActionDescriptors() Microsoft.AspNetCore.Mvc.Routing.AttributeRoute.GetTreeRouter() Microsoft.AspNetCore.Mvc.Routing.AttributeRoute.RouteAsync(RouteContext context) Microsoft.AspNetCore.Routing.RouteCollection.RouteAsync(RouteContext context) Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext) Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

launchSettings.json

{
  "iisSettings": {
    "windowsAuthentication": false, 
    "anonymousAuthentication": true, 
    "iisExpress": {
      "applicationUrl": "http://localhost:50243",
      "sslPort": 44363
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "Shop": {
      "commandName": "Project",
      "launchBrowser": true,
      "applicationUrl": "https://localhost:5001;http://localhost:5000",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}

/Controllers/CarsController.cs

using Shop.Data.Interfaces;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Web.Mvc;

namespace Shop.Controllers
{
    //имеюбтся различные функции которые возвращают обьект типа ViewResult - html страничка, которая будет отображаться на сайте
    public class CarsController : Controller 
    {
        private readonly IAllCars _allCars;
        private readonly ICarsCategory _allCategories;

        public CarsController(IAllCars iAllCars, ICarsCategory iCarsCat)
        {
            _allCars = iAllCars;
            _allCategories = iCarsCat;
        }

        public ViewResult List()
        {
            var cars = _allCars.Cars;
            return View(cars);
        }
    }
}

Data/Interfaces/IAllCars.cs

using Shop.Data.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop.Data.Interfaces
{
    public interface IAllCars
    {
        IEnumerable<Car> Cars { get; }
        IEnumerable<Car> getFavCars { get; set; }
        Car getObjectCar(int carId);
    }
}

Data/Interfaces/ICarsCategory.cs

using Shop.Data.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop.Data.Interfaces
{
    public interface ICarsCategory
    {
        IEnumerable<Category> AllCategories { get; }
    }
}

mocks/MockCars.cs

using Shop.Data.Interfaces;
using Shop.Data.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop.Data.mocks
{
    public class MockCars : IAllCars
    {
        private readonly ICarsCategory _categoryCars = new MockCategory();
        public IEnumerable<Car> Cars 
        {
            get
            {
                return new List<Car> {
                    new Car { 
                        name = "Tesla Model s", 
                        shortDesc = "Быстрый автомобиль", 
                        longDesc = "Красивый, быстрый и очень тихий автомобиль компании Tesla", 
                        img = "https://3dnews.ru/assets/external/illustrations/2020/09/23/1021277/tesla1.jpg", 
                        price = 45000, 
                        isFavorite = true, 
                        available = true, 
                        Category = _categoryCars.AllCategories.First()
                    },
                    new Car {
                        name = "Ford Fiesta",
                        shortDesc = "Тихий и спокойный",
                        longDesc = "Удобный автомобиль для городской жизни",
                        img = "https://images.drive.ru/i/0/5edf7d15ec05c4ff2d000004.jpg",
                        price = 11000,
                        isFavorite = false,
                        available = true,
                        Category = _categoryCars.AllCategories.Last()
                    },
                    new Car {
                        name = "BMW M3",
                        shortDesc = "Дерзский и стильный",
                        longDesc = "Удобный автомобиль для городской жизни",
                        img = "https://s0.rbk.ru/v6_top_pics/media/img/8/26/756007603497268.jpg",
                        price = 65000,
                        isFavorite = true,
                        available = true,
                        Category = _categoryCars.AllCategories.Last()
                    },
                    new Car {
                        name = "Mercedes C class",
                        shortDesc = "Уютный и большой",
                        longDesc = "Удобный автомобиль для городской жизни",
                        img = "https://kolesa-uploads.ru/-/014fd85f-2941-416d-b125-ad45299042bc/mercedes-benz-c-class-front2.jpg",
                        price = 40000,
                        isFavorite = false,
                        available = false,
                        Category = _categoryCars.AllCategories.Last()
                    },
                    new Car {
                        name = "Nissan Leaf",
                        shortDesc = "Бесшумный и экономичный",
                        longDesc = "Удобный автомобиль для городской жизни",
                        img = "https://images.drive.ru/i/0/5ab4f18aec05c4697d00008c.jpg",
                        price = 14000,
                        isFavorite = true,
                        available = true,
                        Category = _categoryCars.AllCategories.First()
                    },
                };
            }
        }
        public IEnumerable<Car> getFavCars { get; set ; }

        public Car getObjectCar(int carId)
        {
            throw new NotImplementedException();
        }
    }
}

mocks/MockCategory.cs

using Shop.Data.Interfaces;
using Shop.Data.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop.Data.mocks
{
    public class MockCategory : ICarsCategory
    {
        public IEnumerable<Category> AllCategories 
        {
            get 
            {
                return new List<Category>
                {
                    new Category { categoryName = "Электромобили", desc = "Современный вид транспорта"},
                    new Category { categoryName = "Классические автомобили", desc = "Машины с двигателями внутреннего згорания"}
                };
            }
        }
    }
}

Models/Car.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop.Data.Models
{
    public class Car
    {
        public int id { get; set; }
        public string name { get; set; }
        public string shortDesc { get; set; }
        public string longDesc { get; set; }
        public string img { get; set; }
        public ushort price { get; set; }
        public bool isFavorite { get; set; }
        public bool available { get; set; }
        public int categoryID { get; set; }
        public virtual Category Category { get; set; }
    }
}

Models/Category.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop.Data.Models
{
    public class Category
    {
        public int id { set; get; }
        public string categoryName { set; get; }
        public string desc { set; get; }
        public List<Car> cars { set; get; }
    }
}

Views/Cars/List.cshtml

@using Shop.Data.Models
@model IEnumerable<Car>
 
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <mate name="viewport" content="width=device-width" />
    <title>List</title>
</head>
<body>
    <h1>Все автомобили</h1>
    @{ 
        foreach(var car in Model)
        {
        <div>
            <h2>Модель: @car.name</h2>
            <p>Цена: @car.price.ToString("c")</p>
        </div>
        }
    }
</body>
</html>

Program.cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }
}

Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Shop.Data.Interfaces;
using Shop.Data.mocks;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Shop
{
    public class Startup
    {
        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services) //для регистрации различных плагинов и модулей их надо регистрировать
        {
            services.AddTransient<IAllCars, MockCars>();
            services.AddTransient<ICarsCategory, MockCategory>();
            services.AddMvc(options => options.EnableEndpointRouting = false);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            //отображение страничнки с ошибками
            app.UseDeveloperExceptionPage();
            //отображение кода странички (404, ...)
            app.UseStatusCodePages();
            app.UseStaticFiles();
            //благодаря этой функции сможем отслеживать URL если не будет указан контроллер и та HTML страничка которая нужна, то будет использоваться URL по умолчанию
            app.UseMvcWithDefaultRoute();
        }
    }
}

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