由于.Net MVC 5登陆和注册方式有很多种，但是Identity方式去实现或许会更简单更容易理解
首先新建一个项目
其次如下选择Empty和MVC的选项
然后打开NuGet包管理器分别安装几个包
- EntityFramework
- Microsoft.AspNet.Identity.Core
- Microsoft.AspNet.Identity.EntityFramework
- Microsoft.AspNet.Identity.Owin
- Modernizr
- Microsoft.Owin.Host.SystemWeb
- Bootstrap
然后往Models文件夹里面添加ApplicationUser类，SignInModel类，SignUpModel类，ApplicationDbContext类，当然ApplicationDbContext类你也可以分到DbContext到另一个类库，我这是做演示用的，分层不用么这么明确
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ApplicationUser类
ApplicationDbContext类
SignInModel类
SignUpModel类
然后往App_Start文件夹里面添加ApplicationSignInManager类，ApplicationUserManager类，ApplicationUserStore类
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ApplicationUserManager类
ApplicationSignInManager类
ApplicationUserStore类
然后往Controller文件夹里面添加HomeController控制器，AccountController控制器
先往HomeController控制器里添加index视图
index视图代码
@using Microsoft.AspNet.Identity@{ ViewBag.Title = "Index";}Index
@if (Request.IsAuthenticated){ using (Html.BeginForm("LogOff", "Account", FormMethod.Post, new { id = "logoutForm", @class = "navbar-right" })) { @Html.AntiForgeryToken() Hello @User.Identity.GetUserName()
}}else{ - @Html.ActionLink("Login", "Login", "Account")
- @Html.ActionLink("Register", "Register", "Account")
然后AccountController控制器代码
private ApplicationSignInManager signInManager; private ApplicationUserManager userManager; public ApplicationSignInManager SignInManager { get { return signInManager ?? HttpContext.GetOwinContext().Get (); } private set { signInManager = value; } } public ApplicationUserManager UserManager { get { return userManager ?? HttpContext.GetOwinContext().GetUserManager (); } private set { userManager = value; } } [AllowAnonymous] public ActionResult Login(string returnUrl) { ViewBag.ReturnUrl = returnUrl; return View(); } [HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public async Task Login(SignInModel model, string returnUrl) { if (!ModelState.IsValid) { return View(model); } var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false); switch (result) { case SignInStatus.Success: return RedirectToLocal(returnUrl); case SignInStatus.Failure: default: ModelState.AddModelError("", "登陆无效"); return View(model); } } [AllowAnonymous] public ActionResult Register() { return View(); } [HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public async Task Register(SignUpModel model) { if (ModelState.IsValid) { var user = new ApplicationUser { UserName = model.Email, Email = model.Email }; var result = await UserManager.CreateAsync(user, model.Password); if (result.Succeeded) { await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false); return RedirectToAction("Index", "Home"); } AddErrors(result); } return View(model); } [HttpPost] [ValidateAntiForgeryToken] public ActionResult LogOff() { AuthenticationManager.SignOut(); return RedirectToAction("Index", "Home"); } private void AddErrors(IdentityResult result) { foreach (var error in result.Errors) { ModelState.AddModelError("", error); } } private ActionResult RedirectToLocal(string returnUrl) { if (Url.IsLocalUrl(returnUrl)) { return Redirect(returnUrl); } return RedirectToAction("Index", "Home"); } private IAuthenticationManager AuthenticationManager { get { return HttpContext.GetOwinContext().Authentication; } } 
然后分别添加生成Login和Register页面
Login页面代码
@model IdentityDemo.Models.SignInModel@{ ViewBag.Title = "Login";}Login
@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post)){ @Html.AntiForgeryToken() SignInModel
@Html.ValidationSummary(true, "", new { @class = "text-danger" }) @Html.LabelFor(model => model.Email, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.TextBoxFor(model => model.Email, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Email, "", new { @class = "text-danger" }) @Html.LabelFor(model => model.Password, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.PasswordFor(model => model.Password, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Password, "", new { @class = "text-danger" }) @Html.LabelFor(model => model.RememberMe, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.CheckBoxFor(model => model.RememberMe) @Html.ValidationMessageFor(model => model.RememberMe, "", new { @class = "text-danger" }) } @Html.ActionLink("注册", "Register") 
Register页面代码
@model IdentityDemo.Models.SignUpModel@{ ViewBag.Title = "Register";}Register
@using (Html.BeginForm("Register", "Account", FormMethod.Post)){ @Html.AntiForgeryToken() SignUpModel
@Html.ValidationSummary(true, "", new { @class = "text-danger" }) @Html.LabelFor(model => model.Email, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.TextBoxFor(model => model.Email, new { htmlAttributes = new { @class = "form-control" } }) @Html.LabelFor(model => model.Password, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.PasswordFor(model => model.Password, new { htmlAttributes = new { @class = "form-control" } }) @Html.LabelFor(model => model.ConfirmPassword, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.PasswordFor(model => model.ConfirmPassword, new { htmlAttributes = new { @class = "form-control" } }) } 
然后往项目的根目录添加Startup类
然后修改根目录的Web.Config文件
最后我们来测试一下看看效果怎么样，如下图
