MVC中Session的使用和傳遞

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1.登入時在controller中記錄session，代碼如下：

 public ActionResult Login(UserLoginViewModel uViewModel)        {            if (ModelState.IsValid)            {                var user = db.ADUsers.SingleOrDefault(t => t.usrName == uViewModel.usrName && t.usrPassword == uViewModel.usrPassword);                if (user != null)                {                    FormsAuthentication.SetAuthCookie(uViewModel.usrName, false);//將使用者名稱放入Cookie中                    System.Web.HttpContext.Current.Session["usrName"] = uViewModel.usrName; //將使用者名稱放入session中                    return RedirectToAction("Index","Home");                }                else                {                    ModelState.AddModelError("usrName", "使用者名稱不存在!");                }            }            return View(uViewModel);        }

 

2.在View中，可以根據session進行判斷是否正常登入

@if (Session["usrName"] != null){    using (Html.BeginForm("LogOff", "ADUsers", FormMethod.Post, new { id = "logoutForm", @class = "navbar-right" }))    {        @Html.AntiForgeryToken()        <ul class="nav navbar-nav navbar-right">            <li>                @Html.ActionLink("你好，" + Session["usrName"] + "!", "Index", "Manage", routeValues: null, htmlAttributes: new { title = "Manage" })            </li>            <li><a href="javascript:document.getElementById(‘logoutForm‘).submit()">登出</a></li>        </ul>    }}else{    <ul class="nav navbar-nav navbar-right">        <li>@Html.ActionLink("登入", "Login", "ADUsers", routeValues: null, htmlAttributes: new { id = "loginLink" })</li>        <li>cookies:@Session["usrName"];</li>    </ul>

 

3.登出時，記得將session清空

        public ActionResult LogOff()        {            FormsAuthentication.SignOut();            System.Web.HttpContext.Current.Session["usrName"] = null;            return RedirectToAction("Login");        }

 

MVC中Session的使用和傳遞