Initial

.gitignore

+bin/
+obj/
+/packages/
+riderModule.iml
+/_ReSharper.Caches/
\ No newline at end of file

Lesson49.sln

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson49", "Lesson49\Lesson49.csproj", "{AE2D2156-CC6F-4A44-B190-1319574BB98D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{AE2D2156-CC6F-4A44-B190-1319574BB98D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AE2D2156-CC6F-4A44-B190-1319574BB98D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AE2D2156-CC6F-4A44-B190-1319574BB98D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AE2D2156-CC6F-4A44-B190-1319574BB98D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

Lesson49/Controllers/BrandsController.cs

+using Lesson49.Models;
+using Lesson49.Models.Data;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Lesson49.Controllers
+{
+    public class BrandsController : Controller
+    {
+        private MobileContext _db;
+
+        public BrandsController(MobileContext db)
+        {
+            _db = db;
+        }
+
+        [HttpGet]
+        public IActionResult Add()
+        {
+            return View();
+        }
+        
+        [HttpPost]
+        public IActionResult Add(Brand brand)
+        {
+            if (brand != null)
+            {
+                _db.Brands.Add(brand);
+                _db.SaveChanges();
+            }
+            return RedirectToAction("Index", "Phones");
+        }
+    }
+}
\ No newline at end of file

Lesson49/Controllers/HomeController.cs

+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Hosting;
+
+namespace Lesson49.Controllers
+{
+    public class HomeController : Controller
+    {
+        private readonly IHostEnvironment _appEnvironment;
+
+        public HomeController(IHostEnvironment appEnvironment)
+        {
+            _appEnvironment = appEnvironment;
+        }
+
+        public IActionResult Index(int? id)
+        {
+            return Json(id);
+        }
+        
+        public User GetUser(int id)//Home/GetString
+        {
+            User u = new User("John", 20,1);
+            User u2 = new User("John", 20,2);
+            User u3 = new User("John", 20,3);
+            User u4 = new User("John", 20,4);
+            List<User> users = new List<User>() {u, u2, u3, u4};
+            return users.FirstOrDefault(u => u.Id == id);
+        }
+
+        public IActionResult DownloadFile()
+        {
+            string filePath = Path.Combine("~\\Files", "book.txt");
+            return File(filePath, "application/pdf", "newBook.txt");
+        }
+        
+        public FileResult GetFileStream()
+        {
+            string path = Path.Combine(_appEnvironment.ContentRootPath, "Files/book.pdf");
+            FileStream stream = new FileStream(path, FileMode.Open);
+            string fileType = "application/pdf";
+            string fileName = "book.txt";
+            return File(stream, fileType, fileName);
+        }
+
+
+        public User CreateUser(User user)
+        {
+            return user;
+        }
+
+        [NonAction]
+        public bool GetBool()
+        {
+            return true;
+        }
+
+        public IActionResult GetSum(int num1, int num2)
+        {
+            return Json(num1+num2);
+        }
+        
+        
+        
+    }
+
+    public class User
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public int Age { get; set; }
+
+        public User(string name, int age, int id)
+        {
+            Id = id;
+            Name = name;
+            Age = age;
+        }
+
+        public User()
+        {
+        }
+        
+    }
+}
\ No newline at end of file

Lesson49/Controllers/OrdersController.cs

+using Lesson49.Models;
+using Lesson49.Models.Data;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Lesson49.Controllers
+{
+    public class OrdersController : Controller
+    {
+        private MobileContext _db;
+
+        public OrdersController(MobileContext db)
+        {
+            _db = db;
+        }
+
+        // GET
+        [HttpGet]
+        public IActionResult Add(int phoneId)
+        {
+            Order order = new Order();
+            order.PhoneId = phoneId;
+            return View(order);
+        }
+
+        [HttpPost]
+        public IActionResult Add(Order order)
+        {
+            
+            if (order != null)
+            {
+                _db.Orders.Add(order);
+                _db.SaveChanges();
+            }
+
+            return RedirectToAction("Index", "Phones");
+        }
+    }
+}
\ No newline at end of file

Lesson49/Controllers/PhonesController.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Lesson49.Models;
+using Lesson49.Models.Data;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Internal;
+
+namespace Lesson49.Controllers
+{
+    public class PhonesController : Controller
+    {
+        private MobileContext _db;
+
+        public PhonesController(MobileContext db)
+        {
+            _db = db;
+        }
+
+        // GET
+        public IActionResult Index() //Phones/Create
+        {
+            List<Phone> phones = _db.Phones
+                .Include(p => p.Brand)
+                .ToList();
+            return View(phones);
+        }
+
+        [HttpGet]
+        public IActionResult Add()//Phones/Add
+        {
+            var brands = _db.Brands
+                .ToDictionary(b => b.Id, b => b.Name);
+            ViewData["brands"] = brands;
+            return View();
+        }
+
+        [HttpPost]
+        public IActionResult Add(Phone phone)
+        {
+            if (phone != null)
+            {
+                _db.Phones.Add(phone);
+                _db.SaveChanges();
+            }
+
+            return RedirectToAction("Index");
+        }
+    }
+}
\ No newline at end of file

Lesson49/Lesson49.csproj

+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+    <PropertyGroup>
+        <TargetFramework>netcoreapp3.1</TargetFramework>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="3.1.13" />
+      <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.13">
+        <PrivateAssets>all</PrivateAssets>
+        <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      </PackageReference>
+      <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="3.1.13" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <_ContentIncludedByDefault Remove="Views\Home\Index.cshtml" />
+      <_ContentIncludedByDefault Remove="Views\Home\Privacy.cshtml" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <Folder Include="Migrations" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <None Update="Files\book.pdf">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </None>
+    </ItemGroup>
+
+</Project>

Lesson49/Migrations/20210326144650_AddBrand.cs

+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace Lesson49.Migrations
+{
+    public partial class AddBrand : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Brands",
+                columns: table => new
+                {
+                    Id = table.Column<int>(nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(nullable: true),
+                    WebSite = table.Column<string>(nullable: true),
+                    IsActive = table.Column<bool>(nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Brands", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Phones",
+                columns: table => new
+                {
+                    Id = table.Column<int>(nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(nullable: true),
+                    BrandId = table.Column<int>(nullable: false),
+                    Price = table.Column<double>(nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Phones", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Phones_Brands_BrandId",
+                        column: x => x.BrandId,
+                        principalTable: "Brands",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Orders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(nullable: true),
+                    Address = table.Column<string>(nullable: true),
+                    ContactPhone = table.Column<string>(nullable: true),
+                    PhoneId = table.Column<int>(nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Orders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Orders_Phones_PhoneId",
+                        column: x => x.PhoneId,
+                        principalTable: "Phones",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Orders_PhoneId",
+                table: "Orders",
+                column: "PhoneId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Phones_BrandId",
+                table: "Phones",
+                column: "BrandId");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Orders");
+
+            migrationBuilder.DropTable(
+                name: "Phones");
+
+            migrationBuilder.DropTable(
+                name: "Brands");
+        }
+    }
+}

Lesson49/Migrations/MobileContextModelSnapshot.cs

+// <auto-generated />
+using Lesson49.Models.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+namespace Lesson49.Migrations
+{
+    [DbContext(typeof(MobileContext))]
+    partial class MobileContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "3.1.13");
+
+            modelBuilder.Entity("Lesson49.Models.Brand", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("WebSite")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Brands");
+                });
+
+            modelBuilder.Entity("Lesson49.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Address")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ContactPhone")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("PhoneId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("Lesson49.Models.Phone", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("BrandId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("REAL");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BrandId");
+
+                    b.ToTable("Phones");
+                });
+
+            modelBuilder.Entity("Lesson49.Models.Order", b =>
+                {
+                    b.HasOne("Lesson49.Models.Phone", "Phone")
+                        .WithMany()
+                        .HasForeignKey("PhoneId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Lesson49.Models.Phone", b =>
+                {
+                    b.HasOne("Lesson49.Models.Brand", "Brand")
+                        .WithMany()
+                        .HasForeignKey("BrandId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Lesson49/Models/Brand.cs

+namespace Lesson49.Models
+{
+    public class Brand
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public string WebSite { get; set; }
+        public bool IsActive { get; set; } = true;
+    }
+}
\ No newline at end of file

Lesson49/Models/Data/MobileContext.cs

+using Microsoft.EntityFrameworkCore;
+
+namespace Lesson49.Models.Data
+{
+    public class MobileContext : DbContext
+    {
+        public DbSet<Phone> Phones { get; set; }
+        public DbSet<Order> Orders { get; set; }
+        public DbSet<Brand> Brands { get; set; }
+        
+        public MobileContext(DbContextOptions<MobileContext> options) :base(options){}
+    }
+}
\ No newline at end of file

Lesson49/Models/ErrorViewModel.cs

+using System;
+
+namespace Lesson49.Models
+{
+    public class ErrorViewModel
+    {
+        public string RequestId { get; set; }
+
+        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+    }
+}
\ No newline at end of file

Lesson49/Models/Order.cs

+namespace Lesson49.Models
+{
+    public class Order
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public string Address { get; set; }
+        public string ContactPhone { get; set; }
+
+        public int PhoneId { get; set; }
+        public Phone Phone { get; set; }
+    }
+}
\ No newline at end of file

Lesson49/Models/Phone.cs

+namespace Lesson49.Models
+{
+    public class Phone
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        
+        public int BrandId { get; set; }
+        public Brand Brand { get; set; }
+        public double Price { get; set; }
+    }
+}
\ No newline at end of file

Lesson49/Program.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace Lesson49
+{
+    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>(); });
+    }
+}
\ No newline at end of file

Lesson49/Properties/launchSettings.json

+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:61520",
+      "sslPort": 44392
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "Lesson49": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

Lesson49/Startup.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Lesson49.Models.Data;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.HttpsPolicy;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace Lesson49
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddControllersWithViews();
+            string connection = Configuration.GetConnectionString("DefaultConnection");
+            services.AddDbContext<MobileContext>(o 
+                => o.UseSqlite(connection));
+            services.AddRazorPages().AddRazorRuntimeCompilation();
+
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+            }
+            else
+            {
+                app.UseExceptionHandler("/HomeController/Error");
+                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+                app.UseHsts();
+            }
+            
+            app.UseStaticFiles();
+
+            app.UseRouting();
+
+            app.UseAuthorization();
+
+            app.UseEndpoints(endpoints =>
+            {
+                endpoints.MapControllerRoute(
+                    name: "default",
+                    pattern: "{controller=Phones}/{action=Index}/{id?}");
+                endpoints.MapControllerRoute(
+                    name: "new",
+                    pattern: "{controller=Home}/{id?}/{action=GetUser}");
+            });
+        }
+    }
+}
\ No newline at end of file

Lesson49/Views/Brands/Add.cshtml

+@model Brand
+
+@{
+    ViewBag.Title = "Add new Brand";
+    Layout = "_Layout";
+}
+
+<div class="d-flex justify-content-center">
+    <div class="form">
+        <h2>Add Brand</h2>
+        @* //localhost:5000/Brands/Add *@
+        <form asp-action="Add" method="post"> 
+            <div class="form-row">
+                <label for="name">
+                    Name
+                    <input asp-for="Name" id="name" type="text" class="form-control">
+                </label>
+            </div>
+            <div class="form-row">
+                <label for="website">
+                    Website
+                    <input asp-for="WebSite" id="website" type="text" class="form-control">
+                </label>
+            </div>
+            <div class="form-row">
+                <button class="btn btn-dark" type="submit">Добавить</button>
+            </div>
+        </form>
+    </div>
+</div>
\ No newline at end of file

Lesson49/Views/Orders/Add.cshtml

+@model Lesson49.Models.Order
+
+@{
+    ViewBag.Title = "Купить смартфон";
+    Layout = "_Layout";
+}
+
+<h2>Купить смартфон</h2>
+
+<div class="d-flex justify-content-center">
+    <div class="form">
+        @* //localhost:5000/Orders/Add *@
+        <form asp-action="Add" method="post">
+            <div class="form-row">
+                <label for="name">
+                    Name
+                    <input asp-for="Name" id="name" type="text" class="form-control">
+                </label>
+                <input type="hidden" asp-for="PhoneId" value="@Model.PhoneId">
+            </div>
+            <div class="form-row">
+                <label for="address">
+                    Address
+                    <input asp-for="Address" id="address" type="text" class="form-control">
+                </label>
+            </div>
+            <div class="form-row">
+                <label for="phone">
+                    Phone
+                    <input asp-for="ContactPhone" id="phone" type="text" class="form-control">
+                </label>
+            </div>
+            <div class="form-row">
+                <button class="btn btn-dark" type="submit">Добавить</button>
+            </div>
+        </form>
+    </div>
+</div>
\ No newline at end of file

Lesson49/Views/Phones/Add.cshtml

+
+@model Phone
+
+@{
+    ViewBag.Title = "title";
+    Layout = "_Layout";
+}
+
+<h2>Add phone</h2>
+
+<div class="row">
+    <div class="phone_add_form col-md-6">
+        <form asp-action="Add" method="post">
+            <div class="form_row">
+                <label for="">
+                    Name
+                    <input asp-for="Name" type="text">
+                </label>
+            </div>
+            <div class="form_row">
+                <label for="">
+                    Brand
+                    <select asp-for="BrandId" id="">
+                        @foreach (var brand in (Dictionary<int, string>)ViewData["brands"])
+                        {
+                            <option value="@brand.Key"> @brand.Value </option>
+                        }
+                    </select>
+                </label>
+            </div>
+            <div class="form_row">
+                <label for="">
+                    Price
+                    <input asp-for="Price" type="text">
+                </label>
+            </div>
+            <button type="submit">Add</button>
+        </form>
+    </div>
+</div>

Lesson49/Views/Phones/Index.cshtml

+@model List<Phone>
+
+@{
+    ViewBag.Title = "Phones List";
+    Layout = "_Layout";
+}
+
+<h2>Phones List</h2>
+<h3>@ViewData["key"]</h3>
+
+<a asp-action="Add" asp-controller="Phones">Add phone</a>
+<div class="table-section">
+    @if (Model.Count == 0)
+    {
+        <h2>Phones list is empty</h2>
+    }
+    else
+    {
+        <table style="width: 100%;">
+            <tr>
+                <th>Id</th>
+                <th>Name</th>
+                <th>Brand</th>
+                <th>Price</th>
+                <th>Action</th>
+            </tr>
+            @foreach (var phone in @Model)
+            {
+                <tr>
+                    <td>@phone.Id</td>
+                    <td>@phone.Name</td>
+                    <td>@phone.Brand.Name</td>
+                    <td>@phone.Price</td>
+                    <td><a asp-action="Add" asp-controller="Orders" asp-route-phoneId="@phone.Id">Купить</a></td>
+                </tr>
+            }
+        </table>
+    }
+</div>
\ No newline at end of file

Lesson49/Views/Shared/Error.cshtml

+@model ErrorViewModel
+@{
+    ViewData["Title"] = "Error";
+}
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (Model.ShowRequestId)
+{
+    <p>
+        <strong>Request ID:</strong> <code>@Model.RequestId</code>
+    </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>
\ No newline at end of file

Lesson49/Views/Shared/_Layout.cshtml

+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+    <title>@ViewData["Title"] - Lesson49</title>
+    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css"/>
+    <link rel="stylesheet" href="~/css/site.css"/>
+</head>
+<body>
+<header>
+    <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
+        <div class="container">
+            <a class="navbar-brand" asp-area="" asp-controller="Phones" asp-action="Index">Lesson49</a>
+            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
+                    aria-expanded="false" aria-label="Toggle navigation">
+                <span class="navbar-toggler-icon"></span>
+            </button>
+            <div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
+                <ul class="navbar-nav flex-grow-1">
+                    <li class="nav-item">
+                        <a class="nav-link text-dark" asp-area="" asp-controller="Phones" asp-action="Index">Phones</a>
+                    </li>
+                    <li class="nav-item">
+                        <a class="nav-link text-dark" asp-area="" asp-controller="Brands" asp-action="Add">Add brand</a>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+</header>
+<div class="container">
+    <main role="main" class="pb-3">
+        @RenderBody()
+    </main>
+</div>
+
+<footer class="border-top footer text-muted">
+    <div class="container">
+        &copy; 2021 - Lesson49
+    </div>
+</footer>
+<script src="~/lib/jquery/dist/jquery.min.js"></script>
+<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+<script src="~/js/site.js" asp-append-version="true"></script>
+@RenderSection("Scripts", required: false)
+</body>
+</html>
\ No newline at end of file

Lesson49/Views/Shared/_ValidationScriptsPartial.cshtml

+<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
+<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>
\ No newline at end of file

Lesson49/Views/_ViewImports.cshtml

+@using Lesson49
+@using Lesson49.Models
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
\ No newline at end of file

Lesson49/Views/_ViewStart.cshtml

+@{
+    Layout = "_Layout";
+}
\ No newline at end of file

Lesson49/appsettings.Development.json

+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  }
+}

Lesson49/appsettings.json

+{
+  "ConnectionStrings": {
+    "DefaultConnection": "Data Source=mobileStore.db"
+  },
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "AllowedHosts": "*"
+}

Lesson49/wwwroot/css/site.css

+/* Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
+for details on configuring this project to bundle and minify static web assets. */
+
+a.navbar-brand {
+  white-space: normal;
+  text-align: center;
+  word-break: break-all;
+}
+
+/* Provide sufficient contrast against white background */
+a {
+  color: #0366d6;
+}
+
+.btn-primary {
+  color: #fff;
+  background-color: #1b6ec2;
+  border-color: #1861ac;
+}
+
+.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
+  color: #fff;
+  background-color: #1b6ec2;
+  border-color: #1861ac;
+}
+
+/* Sticky footer styles
+-------------------------------------------------- */
+html {
+  font-size: 14px;
+}
+@media (min-width: 768px) {
+  html {
+    font-size: 16px;
+  }
+}
+
+.border-top {
+  border-top: 1px solid #e5e5e5;
+}
+.border-bottom {
+  border-bottom: 1px solid #e5e5e5;
+}
+
+.box-shadow {
+  box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
+}
+
+button.accept-policy {
+  font-size: 1rem;
+  line-height: inherit;
+}
+
+/* Sticky footer styles
+-------------------------------------------------- */
+html {
+  position: relative;
+  min-height: 100%;
+}
+
+body {
+  /* Margin bottom by footer height */
+  margin-bottom: 60px;
+}
+.footer {
+  position: absolute;
+  bottom: 0;
+  width: 100%;
+  white-space: nowrap;
+  line-height: 60px; /* Vertically center the text there */
+}
+.form{
+  max-width: 450px;
+  padding: 15%;
+  border: 1px solid silver;
+  border-radius: 5px;
+}
\ No newline at end of file

Lesson49/wwwroot/js/site.js

+// Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
+// for details on configuring this project to bundle and minify static web assets.
+
+// Write your JavaScript code.

Lesson49/wwwroot/lib/bootstrap/LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2011-2018 Twitter, Inc.
+Copyright (c) 2011-2018 The Bootstrap Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Lesson49/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.min.css

+/*!
+ * Bootstrap Reboot v4.3.1 (https://getbootstrap.com/)
+ * Copyright 2011-2019 The Bootstrap Authors
+ * Copyright 2011-2019 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */*,::after,::before{box-sizing:border-box}html{font-family:sans-serif;line-height:1.15;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}article,aside,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;text-align:left;background-color:#fff}[tabindex="-1"]:focus{outline:0!important}hr{box-sizing:content-box;height:0;overflow:visible}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem}p{margin-top:0;margin-bottom:1rem}abbr[data-original-title],abbr[title]{text-decoration:underline;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;border-bottom:0;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#007bff;text-decoration:none;background-color:transparent}a:hover{color:#0056b3;text-decoration:underline}a:not([href]):not([tabindex]){color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus,a:not([href]):not([tabindex]):hover{color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus{outline:0}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em}pre{margin-top:0;margin-bottom:1rem;overflow:auto}figure{margin:0 0 1rem}img{vertical-align:middle;border-style:none}svg{overflow:hidden;vertical-align:middle}table{border-collapse:collapse}caption{padding-top:.75rem;padding-bottom:.75rem;color:#6c757d;text-align:left;caption-side:bottom}th{text-align:inherit}label{display:inline-block;margin-bottom:.5rem}button{border-radius:0}button:focus{outline:1px dotted;outline:5px auto -webkit-focus-ring-color}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,input{overflow:visible}button,select{text-transform:none}select{word-wrap:normal}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{padding:0;border-style:none}input[type=checkbox],input[type=radio]{box-sizing:border-box;padding:0}input[type=date],input[type=datetime-local],input[type=month],input[type=time]{-webkit-appearance:listbox}textarea{overflow:auto;resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{display:block;width:100%;max-width:100%;padding:0;margin-bottom:.5rem;font-size:1.5rem;line-height:inherit;color:inherit;white-space:normal}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}summary{display:list-item;cursor:pointer}template{display:none}[hidden]{display:none!important}
+/*# sourceMappingURL=bootstrap-reboot.min.css.map */
\ No newline at end of file

Lesson49/wwwroot/lib/jquery-validation-unobtrusive/LICENSE.txt

+Copyright (c) .NET Foundation. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+these files except in compliance with the License. You may obtain a copy of the
+License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.

Lesson49/wwwroot/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js

+// Unobtrusive validation support library for jQuery and jQuery Validate
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+// @version v3.2.11
+!function(a){"function"==typeof define&&define.amd?define("jquery.validate.unobtrusive",["jquery-validation"],a):"object"==typeof module&&module.exports?module.exports=a(require("jquery-validation")):jQuery.validator.unobtrusive=a(jQuery)}(function(a){function e(a,e,n){a.rules[e]=n,a.message&&(a.messages[e]=a.message)}function n(a){return a.replace(/^\s+|\s+$/g,"").split(/\s*,\s*/g)}function t(a){return a.replace(/([!"#$%&'()*+,.\/:;<=>?@\[\\\]^`{|}~])/g,"\\$1")}function r(a){return a.substr(0,a.lastIndexOf(".")+1)}function i(a,e){return 0===a.indexOf("*.")&&(a=a.replace("*.",e)),a}function o(e,n){var r=a(this).find("[data-valmsg-for='"+t(n[0].name)+"']"),i=r.attr("data-valmsg-replace"),o=i?a.parseJSON(i)!==!1:null;r.removeClass("field-validation-valid").addClass("field-validation-error"),e.data("unobtrusiveContainer",r),o?(r.empty(),e.removeClass("input-validation-error").appendTo(r)):e.hide()}function d(e,n){var t=a(this).find("[data-valmsg-summary=true]"),r=t.find("ul");r&&r.length&&n.errorList.length&&(r.empty(),t.addClass("validation-summary-errors").removeClass("validation-summary-valid"),a.each(n.errorList,function(){a("<li />").html(this.message).appendTo(r)}))}function s(e){var n=e.data("unobtrusiveContainer");if(n){var t=n.attr("data-valmsg-replace"),r=t?a.parseJSON(t):null;n.addClass("field-validation-valid").removeClass("field-validation-error"),e.removeData("unobtrusiveContainer"),r&&n.empty()}}function l(e){var n=a(this),t="__jquery_unobtrusive_validation_form_reset";if(!n.data(t)){n.data(t,!0);try{n.data("validator").resetForm()}finally{n.removeData(t)}n.find(".validation-summary-errors").addClass("validation-summary-valid").removeClass("validation-summary-errors"),n.find(".field-validation-error").addClass("field-validation-valid").removeClass("field-validation-error").removeData("unobtrusiveContainer").find(">*").removeData("unobtrusiveContainer")}}function u(e){var n=a(e),t=n.data(v),r=a.proxy(l,e),i=f.unobtrusive.options||{},u=function(n,t){var r=i[n];r&&a.isFunction(r)&&r.apply(e,t)};return t||(t={options:{errorClass:i.errorClass||"input-validation-error",errorElement:i.errorElement||"span",errorPlacement:function(){o.apply(e,arguments),u("errorPlacement",arguments)},invalidHandler:function(){d.apply(e,arguments),u("invalidHandler",arguments)},messages:{},rules:{},success:function(){s.apply(e,arguments),u("success",arguments)}},attachValidation:function(){n.off("reset."+v,r).on("reset."+v,r).validate(this.options)},validate:function(){return n.validate(),n.valid()}},n.data(v,t)),t}var m,f=a.validator,v="unobtrusiveValidation";return f.unobtrusive={adapters:[],parseElement:function(e,n){var t,r,i,o=a(e),d=o.parents("form")[0];d&&(t=u(d),t.options.rules[e.name]=r={},t.options.messages[e.name]=i={},a.each(this.adapters,function(){var n="data-val-"+this.name,t=o.attr(n),s={};void 0!==t&&(n+="-",a.each(this.params,function(){s[this]=o.attr(n+this)}),this.adapt({element:e,form:d,message:t,params:s,rules:r,messages:i}))}),a.extend(r,{__dummy__:!0}),n||t.attachValidation())},parse:function(e){var n=a(e),t=n.parents().addBack().filter("form").add(n.find("form")).has("[data-val=true]");n.find("[data-val=true]").each(function(){f.unobtrusive.parseElement(this,!0)}),t.each(function(){var a=u(this);a&&a.attachValidation()})}},m=f.unobtrusive.adapters,m.add=function(a,e,n){return n||(n=e,e=[]),this.push({name:a,params:e,adapt:n}),this},m.addBool=function(a,n){return this.add(a,function(t){e(t,n||a,!0)})},m.addMinMax=function(a,n,t,r,i,o){return this.add(a,[i||"min",o||"max"],function(a){var i=a.params.min,o=a.params.max;i&&o?e(a,r,[i,o]):i?e(a,n,i):o&&e(a,t,o)})},m.addSingleVal=function(a,n,t){return this.add(a,[n||"val"],function(r){e(r,t||a,r.params[n])})},f.addMethod("__dummy__",function(a,e,n){return!0}),f.addMethod("regex",function(a,e,n){var t;return!!this.optional(e)||(t=new RegExp(n).exec(a),t&&0===t.index&&t[0].length===a.length)}),f.addMethod("nonalphamin",function(a,e,n){var t;return n&&(t=a.match(/\W/g),t=t&&t.length>=n),t}),f.methods.extension?(m.addSingleVal("accept","mimtype"),m.addSingleVal("extension","extension")):m.addSingleVal("extension","extension","accept"),m.addSingleVal("regex","pattern"),m.addBool("creditcard").addBool("date").addBool("digits").addBool("email").addBool("number").addBool("url"),m.addMinMax("length","minlength","maxlength","rangelength").addMinMax("range","min","max","range"),m.addMinMax("minlength","minlength").addMinMax("maxlength","minlength","maxlength"),m.add("equalto",["other"],function(n){var o=r(n.element.name),d=n.params.other,s=i(d,o),l=a(n.form).find(":input").filter("[name='"+t(s)+"']")[0];e(n,"equalTo",l)}),m.add("required",function(a){"INPUT"===a.element.tagName.toUpperCase()&&"CHECKBOX"===a.element.type.toUpperCase()||e(a,"required",!0)}),m.add("remote",["url","type","additionalfields"],function(o){var d={url:o.params.url,type:o.params.type||"GET",data:{}},s=r(o.element.name);a.each(n(o.params.additionalfields||o.element.name),function(e,n){var r=i(n,s);d.data[r]=function(){var e=a(o.form).find(":input").filter("[name='"+t(r)+"']");return e.is(":checkbox")?e.filter(":checked").val()||e.filter(":hidden").val()||"":e.is(":radio")?e.filter(":checked").val()||"":e.val()}}),e(o,"remote",d)}),m.add("password",["min","nonalphamin","regex"],function(a){a.params.min&&e(a,"minlength",a.params.min),a.params.nonalphamin&&e(a,"nonalphamin",a.params.nonalphamin),a.params.regex&&e(a,"regex",a.params.regex)}),m.add("fileextensions",["extensions"],function(a){e(a,"extension",a.params.extensions)}),a(function(){f.unobtrusive.parse(document)}),f.unobtrusive});
\ No newline at end of file

Lesson49/wwwroot/lib/jquery-validation/LICENSE.md

+The MIT License (MIT)
+=====================
+
+Copyright Jörn Zaefferer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Lesson49/wwwroot/lib/jquery/LICENSE.txt

+Copyright JS Foundation and other contributors, https://js.foundation/
+
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/jquery/jquery
+
+The following license applies to all parts of this software except as
+documented below:
+
+====
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+====
+
+All files located in the node_modules and external directories are
+externally maintained libraries used by this software which have their
+own licenses; we recommend you read them, as their terms may differ from
+the terms above.

global.json

+{
+  "sdk": {
+    "version": "3.1.402"
+  }
+}
\ No newline at end of file