Write a full scale ASP.NET CORE MVC application implementing login and register without using roles, claims and identities. This should be industrial grade application.
Creating a full-scale ASP.NET Core MVC application with login and registration functionality without using roles, claims, and identities involves several steps. Below is a simplified version of how you can implement this. This example will cover the essential components, including the project structure, models, views, controllers, and basic authentication logic.
Create a new ASP.NET Core MVC project:
dotnet new mvc -n MyAuthApp
cd MyAuthApp
Add necessary packages: You may want to add Entity Framework Core for database operations. You can use SQLite for simplicity.
dotnet add package Microsoft.EntityFrameworkCore.Sqlite
dotnet add package Microsoft.EntityFrameworkCore.Tools
Project Structure:
MyAuthApp/
├── Controllers/
│ ├── AccountController.cs
├── Data/
│ ├── ApplicationDbContext.cs
├── Models/
│ ├── User.cs
├── Views/
│ ├── Account/
│ │ ├── Login.cshtml
│ │ ├── Register.cshtml
├── wwwroot/
├── appsettings.json
├── Program.cs
└── Startup.cs
Create a User model in the Models folder.
// Models/User.cs
using System.ComponentModel.DataAnnotations;
namespace MyAuthApp.Models
{
public class User
{
[Key]
public int Id { get; set; }
[Required]
[EmailAddress]
public string Email { get; set; }
[Required]
[DataType(DataType.Password)]
public string Password { get; set; }
}
}
Create a database context in the Data folder.
// Data/ApplicationDbContext.cs
using Microsoft.EntityFrameworkCore;
using MyAuthApp.Models;
namespace MyAuthApp.Data
{
public class ApplicationDbContext : DbContext
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options) { }
public DbSet<User> Users { get; set; }
}
}
In Startup.cs, configure the database context.
// Startup.cs
using Microsoft.EntityFrameworkCore;
using MyAuthApp.Data;
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlite("Data Source=app.db"));
services.AddControllersWithViews();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
});
}
}
Create an AccountController in the Controllers folder.
// Controllers/AccountController.cs
using Microsoft.AspNetCore.Mvc;
using MyAuthApp.Data;
using MyAuthApp.Models;
using System.Linq;
using System.Threading.Tasks;
namespace MyAuthApp.Controllers
{
public class AccountController : Controller
{
private readonly ApplicationDbContext _context;
public AccountController(ApplicationDbContext context)
{
_context = context;
}
[HttpGet]
public IActionResult Register() => View();
[HttpPost]
public async Task<IActionResult> Register(User user)
{
if (ModelState.IsValid)
{
// Check if user already exists
if (_context.Users.Any(u => u.Email == user.Email))
{
ModelState.AddModelError("", "Email already in use.");
return View(user);
}
// Save user to database
_context.Users.Add(user);
await _context.SaveChangesAsync();
return RedirectToAction("Login");
}
return View(user);
}
[HttpGet]
public IActionResult Login() => View();
[HttpPost]
public IActionResult Login(string email, string password)
{
var user = _context.Users.FirstOrDefault(u => u.Email == email && u.Password == password);
if (user != null)
{
// Set session or cookie here
HttpContext.Session.SetString("UserEmail", user.Email);
return RedirectToAction("Index", "Home");
}
ModelState.AddModelError("", "Invalid login attempt.");
return View();
}
public IActionResult Logout()
{
HttpContext.Session.Remove("UserEmail");
return RedirectToAction("Login");
}
}
}
Create the views in the Views/Account folder.
Register.cshtml:
@model MyAuthApp.Models.User
<form asp-action="Register" method="post">
<div>
<label>Email</label>
<input asp-for="Email" />
<span asp-validation-for="Email"></span>
</div>
<div>
<label>Password</label>
<input asp-for="Password" type="password" />
<span asp-validation-for="Password"></span>
</div>
<button type="submit">Register</button>
</form>
Login.cshtml:
<form asp-action="Login" method="post">
<div>
<label>Email</label>
<input type="text" name="email" />
</div>
<div>
<label>Password</label>
<input type="password" name="password" />
</div>
<button type="submit">Login</button>
</form>
Add session support in Startup.cs.
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlite("Data Source=app.db"));
services.AddControllersWithViews();
services.AddSession(); // Add this line
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
// ... existing code ...
app.UseSession(); // Add this line
// ... existing code ...
}
Run the following commands to create the database and apply migrations.
dotnet ef migrations add InitialCreate
dotnet ef database update
Run the application using:
dotnet run
This is a basic implementation of a login and registration system in an ASP.NET Core MVC application without using roles, claims, and identities. For a production-ready application, consider implementing:
BCrypt.Net or ASP.NET Core Identity).This example serves as a starting point, and you can expand upon it based on your