Login Form with Session in ASP.NET Core MVC 5
Create ASP.NET Core MVC 5 Project On the Visual Studio, select Create a new project from Get Started Select ASP.NET Core Web Application Input Project Name and select Location for new project Select ASP.NET Core 5.0 Version and select ASP.NET Core Empty Template. Click Create button to finish Add Configurations Open Startup.cs file and add new configurations as below: using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; namespace LearnASPNETCoreMVC5 { public class Startup { public void ConfigureServices(IServiceCollection services) { services.AddControllersWithViews(); services.AddSession(); } public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } app.UseSession(); app.UseStaticFiles(); app.UseRouting(); app.UseEndpoints(endpoints => { endpoints.MapControllerRoute( name: “default”, pattern: “{controller=Demo}/{action=Index}/{id?}”); }); } } } Create Controller Create new folder named Controllers. In this folder, create new controller named AccountController.cs as below: using Microsoft.AspNetCore.Http; using Microsoft.AspNetCore.Mvc; namespace LearnASPNETCoreMVC5.Controllers { [Route(“account”)] public class AccountController : Controller { [Route(“”)] [Route(“index”)] [Route(“~/”)] public IActionResult Index() { return View(); } [Route(“login”)] [HttpPost] public IActionResult Login(string username, string password) { if (username != null && password != null && username.Equals(“acc1”) && password.Equals(“123”)) { HttpContext.Session.SetString(“username”, username); return View(“Success”); } else { ViewBag.error = “Invalid Account”; return View(“Index”); } } [Route(“logout”)] [HttpGet] public IActionResult Logout() { HttpContext.Session.Remove(“username”); return RedirectToAction(“Index”); } } } Create View Create new folder named Views. In this folder, create new folder named Account and add new views as below: Index View In Account folder, create new view named Index.cshtml as below: <html> <head> <meta name="viewport" content="width=device-width" /> <title>Index</title> </head> <body> <h3>Login Page</h3> @ViewBag.error <form method="post" asp-controller="account" asp-action="login"> <table border="0" cellpadding="2" cellspacing="2"> <tr> <td>Username</td> <td><input type="text" name="username"></td> </tr> <tr> <td>Password</td> <td><input type="password" name="password"></td> </tr> <tr> <td> </td> <td><input type="submit" value="Login"></td> </tr> </table> </form> </body> </html> Success View In Account folder, create new view named Success.cshtml as below: @using Microsoft.AspNetCore.Http; <html> <head> <meta name="viewport" content="width=device-width" /> <title>Success</title> </head> <body> <h3>Success Page</h3> Welcome @Context.Session.GetString("username") <br> <a asp-controller="account" asp-action="logout">Logout</a> </body> </html> Create Razor View Imports Select Views folder and right click to select Add\New Item Menu Select Web\ASP.NET in left side. Select Razor View Imports item and click Add button to Finish In _ViewImports.cshtml file and TagHelpers library as below: @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers Structure of ASP.NET Core MVC 5 Project Run Application Access Index action in Account controller with following url: http://localhost:48982/Account/Index Output Test with invalid account is username: aa and password: 123 Output Test with valid account is username: acc1 and password: 123. Output Click logout link from success page to remove session and open login page again Output
