Migrate HomeController to .NET Core 6

README.md

@@ -8,6 +8,41 @@ The code for this sample MVC web application, and the associated
 by [Jon Smith](http://www.thereformedprogrammer.net/about-me/) 
 under the [MIT licence](http://opensource.org/licenses/MIT).
 
+## .NET Core 6 Migration
+
+**NEW: HomeController Migration to .NET Core 6**
+
+This repository now includes a .NET Core 6 version of the HomeController in the `SampleWebApp.Core` project, demonstrating the migration path from ASP.NET MVC 5 (.NET Framework 4.5.1) to .NET Core 6.
+
+### Project Structure
+
+- **SampleWebApp** - Original ASP.NET MVC 5 (.NET Framework 4.5.1) project
+- **SampleWebApp.Core** - New .NET Core 6 project with migrated HomeController
+
+### Key Migration Changes
+
+The HomeController migration includes the following updates:
+
+1. **Namespace Updates**: Changed from `System.Web.Mvc` to `Microsoft.AspNetCore.Mvc`
+2. **Return Types**: Updated from `ActionResult` to `IActionResult`
+3. **Memory Metrics**: Updated `InternalsInfo` model to use .NET Core compatible APIs (`GC.GetGCMemoryInfo()` instead of `PerformanceCounter`)
+4. **Views**: Migrated to use tag helpers and .NET Core conventions
+5. **Project Structure**: Created with modern .NET Core 6 project structure and configuration
+
+### Running the .NET Core 6 Version
+
+```bash
+cd SampleWebApp.Core
+dotnet run
+```
+
+The .NET Core 6 version includes all HomeController actions:
+- **Index**: Welcome page with application information
+- **About**: Application description page
+- **Contact**: Contact information page
+- **Internals**: System metrics display (WorkerThreads, AvailableThreads, Memory usage)
+- **CodeView**: Migration explanation and code documentation
+
 This code is available as a [live web site](http://samplemvcwebapp.net/) which includes explanations 
 of the code - see an example of this on the [Posts code explanation](http://samplemvcwebapp.net/Posts/CodeView) page.
 
@@ -20,7 +55,9 @@ See [NuGet Package Page](https://www.nuget.org/packages/GenericServices/) for mo
 Visit [Complex.SampleMvcWebApp](http://complex.samplemvcwebapp.net/) to see more.
 
 
-The specific features in the code in this example are:
+## Original ASP.NET MVC5 Features
+
+The specific features in the code in the original ASP.NET MVC5 example are:
 
 ### 1. Simple, but robust database services
 

SampleWebApp.Core/Controllers/HomeController.cs

@@ -0,0 +1,35 @@
+using Microsoft.AspNetCore.Mvc;
+using SampleWebApp.Core.Models;
+
+namespace SampleWebApp.Core.Controllers
+{
+    public class HomeController : Controller
+    {
+        public IActionResult Index()
+        {
+            return View();
+        }
+
+        public IActionResult About()
+        {
+            ViewBag.Message = "Your application description page.";
+
+            return View();
+        }
+
+        public IActionResult Contact()
+        {
+            return View();
+        }
+
+        public IActionResult Internals()
+        {
+            return View(new InternalsInfo());
+        }
+
+        public IActionResult CodeView()
+        {
+            return View();
+        }
+    }
+}

SampleWebApp.Core/Models/InternalsInfo.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Diagnostics;
+using System.Threading;
+
+namespace SampleWebApp.Core.Models
+{
+    public class InternalsInfo
+    {
+        public int WorkerThreads { get; private set; }
+
+        public int AvailableThreads { get; private set; }
+
+        public int AvailableMbytes { get; private set; }
+
+        public int HeapMemoryUsedKbytes { get; private set; }
+
+        public InternalsInfo()
+        {
+            int workerThreads;
+            int completionPortThreads;
+            ThreadPool.GetMaxThreads(out workerThreads, out completionPortThreads);
+
+            int availableThreads;
+            ThreadPool.GetAvailableThreads(out availableThreads, out completionPortThreads);
+
+            WorkerThreads = workerThreads;
+            AvailableThreads = availableThreads;
+
+            using (var process = Process.GetCurrentProcess())
+            {
+                AvailableMbytes = (int)(GC.GetGCMemoryInfo().TotalAvailableMemoryBytes / (1024 * 1024));
+
+                HeapMemoryUsedKbytes = (int)(GC.GetTotalMemory(true) / 1000);
+            }
+        }
+    }
+}

SampleWebApp.Core/Pages/Error.cshtml

@@ -0,0 +1,26 @@
+@page
+@model ErrorModel
+@{
+    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 the <strong>Development</strong> environment displays 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>

SampleWebApp.Core/Pages/Error.cshtml.cs

@@ -0,0 +1,27 @@
+using System.Diagnostics;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace SampleWebApp.Core.Pages;
+
+[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+[IgnoreAntiforgeryToken]
+public class ErrorModel : PageModel
+{
+    public string? RequestId { get; set; }
+
+    public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+
+    private readonly ILogger<ErrorModel> _logger;
+
+    public ErrorModel(ILogger<ErrorModel> logger)
+    {
+        _logger = logger;
+    }
+
+    public void OnGet()
+    {
+        RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
+    }
+}
+

SampleWebApp.Core/Pages/Index.cshtml

@@ -0,0 +1,10 @@
+@page
+@model IndexModel
+@{
+    ViewData["Title"] = "Home page";
+}
+
+<div class="text-center">
+    <h1 class="display-4">Welcome</h1>
+    <p>Learn about <a href="https://learn.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
+</div>

SampleWebApp.Core/Pages/Index.cshtml.cs

@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace SampleWebApp.Core.Pages;
+
+public class IndexModel : PageModel
+{
+    private readonly ILogger<IndexModel> _logger;
+
+    public IndexModel(ILogger<IndexModel> logger)
+    {
+        _logger = logger;
+    }
+
+    public void OnGet()
+    {
+
+    }
+}

SampleWebApp.Core/Pages/Privacy.cshtml

@@ -0,0 +1,8 @@
+@page
+@model PrivacyModel
+@{
+    ViewData["Title"] = "Privacy Policy";
+}
+<h1>@ViewData["Title"]</h1>
+
+<p>Use this page to detail your site's privacy policy.</p>

SampleWebApp.Core/Pages/Privacy.cshtml.cs

@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace SampleWebApp.Core.Pages;
+
+public class PrivacyModel : PageModel
+{
+    private readonly ILogger<PrivacyModel> _logger;
+
+    public PrivacyModel(ILogger<PrivacyModel> logger)
+    {
+        _logger = logger;
+    }
+
+    public void OnGet()
+    {
+    }
+}
+

SampleWebApp.Core/Pages/Shared/_Layout.cshtml

@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>@ViewData["Title"] - SampleWebApp.Core</title>
+    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
+    <link rel="stylesheet" href="~/SampleWebApp.Core.styles.css" asp-append-version="true" />
+</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-page="/Index">SampleWebApp.Core</a>
+                <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-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 justify-content-between">
+                    <ul class="navbar-nav flex-grow-1">
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-page="/Index">Home</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-page="/Privacy">Privacy</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; 2025 - SampleWebApp.Core - <a asp-area="" asp-page="/Privacy">Privacy</a>
+        </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>
+
+    @await RenderSectionAsync("Scripts", required: false)
+</body>
+</html>

SampleWebApp.Core/Pages/Shared/_Layout.cshtml.css

@@ -0,0 +1,48 @@
+/* Please see documentation at https://learn.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;
+}
+
+a {
+  color: #0077cc;
+}
+
+.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;
+}
+
+.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;
+}
+
+.footer {
+  position: absolute;
+  bottom: 0;
+  width: 100%;
+  white-space: nowrap;
+  line-height: 60px;
+}

SampleWebApp.Core/Pages/Shared/_ValidationScriptsPartial.cshtml

@@ -0,0 +1,2 @@
+<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
+<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>

SampleWebApp.Core/Pages/_ViewImports.cshtml

@@ -0,0 +1,3 @@
+@using SampleWebApp.Core
+@namespace SampleWebApp.Core.Pages
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

SampleWebApp.Core/Pages/_ViewStart.cshtml

@@ -0,0 +1,3 @@
+@{
+    Layout = "_Layout";
+}

SampleWebApp.Core/Program.cs

@@ -0,0 +1,27 @@
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddControllersWithViews();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (!app.Environment.IsDevelopment())
+{
+    app.UseExceptionHandler("/Home/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.UseHttpsRedirection();
+app.UseStaticFiles();
+
+app.UseRouting();
+
+app.UseAuthorization();
+
+app.MapControllerRoute(
+    name: "default",
+    pattern: "{controller=Home}/{action=Index}/{id?}");
+
+app.Run();