MVC - Helloworl

ASP_NET_CORE/mvc01_HelloWorld/.vscode/launch.json

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+{
+   // Use IntelliSense to find out which attributes exist for C# debugging
+   // Use hover for the description of the existing attributes
+   // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+   "version": "0.2.0",
+   "configurations": [
+        {
+            "name": ".NET Core Launch (web)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/bin/Debug/netcoreapp3.1/mvc01_HelloWorld.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            // Enable launching a web browser when ASP.NET Core starts. For more information: https://aka.ms/VSCode-CS-LaunchJson-WebBrowser
+            "serverReadyAction": {
+                "action": "openExternally",
+                "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
+            },
+            "env": {
+                "ASPNETCORE_ENVIRONMENT": "Development"
+            },
+            "sourceFileMap": {
+                "/Views": "${workspaceFolder}/Views"
+            }
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ]
+}

ASP_NET_CORE/mvc01_HelloWorld/.vscode/tasks.json

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+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/mvc01_HelloWorld.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/mvc01_HelloWorld.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "${workspaceFolder}/mvc01_HelloWorld.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

ASP_NET_CORE/mvc01_HelloWorld/Controllers/HomeController.cs

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+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using mvc01_HelloWorld.Models;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+
+namespace mvc01_HelloWorld.Controllers {
+    public class HomeController : Controller {
+        private readonly ILogger<HomeController> _logger;
+
+        public HomeController (ILogger<HomeController> logger) {
+            _logger = logger;
+
+        }
+
+        public string XinChao () => "Xin chào ASP.NET Core 3.x";
+
+        public IActionResult Index () {
+            ViewBag.dulieu1 = "Đây là dữ liệu 1"; //key=dulieu1,  value = "Đây là dữ liệu 1"
+            ViewBag.dulieu2 = 12345;
+
+            // Một danh sách tênn các sản phầm
+            List<string> sanpham = new List<string>()
+            {
+                "Bàn ăn",
+                "Giường ngủ",
+                "Tủ áo"
+            };
+
+            return View (sanpham);
+        }
+
+        public IActionResult GetContent () {
+            // mime - tham khảo https://en.wikipedia.org/wiki/Media_type
+            string contentType = "text/plain";
+            string content = "Đây là nội dung file văn bản";
+            return Content (content, contentType, Encoding.UTF8);
+        }
+        public IActionResult TestRedirect () {
+
+            return Redirect ("https://xuanthulab.net"); // Redirect 302 - chuyển hướng sang URL khác
+            // return RedirectToRoute(new {controller="Home", action="Index"});    // Redirect 302 - Found
+            // return RedirectPermanent("https://xuanthulab.net");                 // Redirect 301 - chuyển hướng URL khác
+            // return RedirectToAction("Index");                                   // Chuyển hướng sang Action khác
+        }
+        public IActionResult Sum (int x, int y) {
+            return Content ((x + y).ToString (), "text/plain", Encoding.UTF8);
+        }
+        public IActionResult GetJson () {
+            return Json (
+                new {
+                    key1 = 100,
+                        key2 = new string[] { "a", "b", "c" }
+                }
+            );
+        }
+
+        public IActionResult Privacy () {
+            return View ();
+        }
+
+        [ResponseCache (Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+        public IActionResult Error () {
+            return View (new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
+        }
+    }
+}

ASP_NET_CORE/mvc01_HelloWorld/Models/ErrorViewModel.cs

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+using System;
+
+namespace mvc01_HelloWorld.Models
+{
+    public class ErrorViewModel
+    {
+        public string RequestId { get; set; }
+
+        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+    }
+}

ASP_NET_CORE/mvc01_HelloWorld/Program.cs

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+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 mvc01_HelloWorld
+{
+    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>();
+                });
+    }
+}

ASP_NET_CORE/mvc01_HelloWorld/Properties/launchSettings.json

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+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:54545",
+      "sslPort": 44372
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "mvc01_HelloWorld": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:5001;http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

ASP_NET_CORE/mvc01_HelloWorld/Startup.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.HttpsPolicy;
+using Microsoft.AspNetCore.Routing.Constraints;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.AspNetCore.Http;
+
+namespace mvc01_HelloWorld {
+    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 ();
+        }
+
+        // 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 ("/Home/Error");
+                // Thông báo chỉ truy cập bằng https
+                app.UseHsts ();
+            }
+
+            // Middleware HttpsRedirection -> Chuyển hướng http sang https
+            app.UseHttpsRedirection ();
+
+            // StaticFileMiddleware - truy cập file tĩnh
+            app.UseStaticFiles ();
+
+            app.UseRouting ();
+
+            // AuthorizationMiddleware 
+            app.UseAuthorization ();
+
+            // Tạo các Endpoint
+            app.UseEndpoints (endpoints => {
+               
+
+
+                endpoints.MapControllerRoute (
+                    name: "default",
+                    pattern: "{controller=Home}/{action=Index}/{id?}");
+                    
+                // endpoints.MapControllerRoute (
+                //     name: "myroute", // đặt tên route
+                //     defaults : new { controller = "Home", action = "Index" },
+                //     constraints : new {
+                //         id = @"\d+", // id phải có và phải là số
+                //         title = new RegexRouteConstraint (new Regex (@"^[a-z0-9-]*$")) // title chỉ chứa số, chữ thường và ký hiệu -
+                //     },
+                //     pattern: "{title}-{id}.html");
+
+                 endpoints.MapControllerRoute (
+                    name: "myroute", // đặt tên route
+                    defaults : new { controller = "Home", action = "Index" },
+                    pattern: "{title:alpha:maxlength(8)}-{id:int}.html");
+            });
+        }
+    }
+}

ASP_NET_CORE/mvc01_HelloWorld/Views/Home/Index.cshtml

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+@model List<string>
+
+@{
+    Layout = null;      
+}
+<!doctype html>
+<html>
+    <head>
+        <title>Trang View đầu tiên</title>
+    </head>
+    <body>
+        <p>View .CSHTML là template <strong>Razor</strong> - nó chứa code C# bắt đầu bởi @@</p>
+        <p><i>@DateTime.Now.ToLongDateString() xuanthulab.net</i></p>
+        <p>@ViewBag.dulieu1</p>
+        <p>@ViewBag.dulieu2</p>
+
+        <ol>
+            @foreach (var sp in Model) {
+                <li>@sp</li>
+            }
+        </ol>
+
+    </body>
+</html>

ASP_NET_CORE/mvc01_HelloWorld/Views/Home/Privacy.cshtml

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

ASP_NET_CORE/mvc01_HelloWorld/Views/Shared/Error.cshtml

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+@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>