Добавил страницу для отображения деталей продукта

Store/Controllers/ProductController.cs

@@ -33,5 +33,17 @@ namespace Store.Controllers
 
             return View();
         }
+
+        public IActionResult Details(string id)
+        {
+            return View(new Product
+            {
+                Id = Guid.NewGuid().ToString(),
+                Name = "Asus A674",
+                Amount = 150,
+                Brand = "Asus",
+                Category = "TV"
+            });
+        }
     }
 }

Store/Startup.cs

@@ -57,6 +57,9 @@ namespace Store
                 {
                     routes.MapRoute(
                         name: "default", template: "{controller=Product}/{action=Index}");
+
+                    routes.MapRoute(
+                        name: "details", template: "{controller=Product}/{action=Details}/{id}");
                 });
         }
     }

Store/Views/Product/Details.cshtml

+@model Store.Models.Product
+
+@{
+    Layout = "_MainLayout";
+}
+<h2>Product details:</h2>
+
+<table class="table">
+    <tbody>
+    <tr>
+        <td>Name:</td>
+        <td>@Model.Name</td>
+    </tr>
+    <tr>
+        <td>Category:</td>
+        <td>@Model.Category</td>
+    </tr>
+    <tr>
+        <td>Brand:</td>
+        <td>@Model.Brand</td>
+    </tr>
+    <tr>
+        <td>Amount:</td>
+        <td>@Model.Amount</td>
+    </tr>
+    </tbody>
+</table>

Store/Views/Shared/_MainLayout.cshtml

@@ -22,7 +22,7 @@
             <div class="navbar-collapse collapse">
                 <ul class="nav navbar-nav">
                     <li>
-                        <a href="/Product/Index">Home</a>
+                        <a href="/Product/Index">Main</a>
                     </li>
                 </ul>
             </div>
@@ -39,7 +39,6 @@
     </footer>
 </div>
 
-
 <script src="~/lib/jquery/dist/jquery.js"></script>
 <script src="~/lib/bootstrap/dist/js/bootstrap.js"></script>
 <script src="~/js/site.js" asp-append-version="true"></script>