MVC登录

 建立Models
   public int Id { get; set; }

        [DisplayName("用户名")]
        public string UserName { get; set; }

        [DisplayName("密码")]
        [DataType(DataType.Password)]
        public string Password { get; set; }
创建上下文类
 public class MsgContext:DbContext
    {
        public DbSet<Message> Messages { get; set; }
        public DbSet<Login> Admins { get; set; }
    }

还需要在Web.Config中改变数据库连接
控制器代码
 ColContext db = new ColContext();
        [HttpGet]
        public ActionResult Login()
        {
            return View();
        }
        [HttpPost]
        public ActionResult Login(Login User)
        {
            var user = db.Logins.Where(a => a.UserName == User.UserName && a.Password == User.Password).FirstOrDefault();
            if (user != null)
                return RedirectToAction("Index", "Admin");
            return View();
        }

添加视图(选择Login，Edit)

@model MyObject.Models.Login

@{
    ViewBag.Title = "Login";
}

<h2>留言管理登录</h2>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>登录</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.UserName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.UserName)
            @Html.ValidationMessageFor(model => model.UserName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Password)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Password)
            @Html.ValidationMessageFor(model => model.Password)
        </div>

        <p>
            <input type="submit" value="登录" />
        </p>
    </fieldset>
}

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}