前端页面代码主要显示退出系统或者网站的可视化按钮代码,代码如下：<ulclass="navnavbar-navnavbar-right">

<liclass="">

<ahref="javascript:;"rel="externalnofollow"class="user-profiledropdown-toggle"data-toggle="dropdown"aria-expanded="false">

<imgsrc="@Url.Content("~/assets/img/user2.png")"alt="">@CPU.UserProfile.User.UserID

<spanclass="fafa-angle-down"></span>

</a>

<ulclass="dropdown-menudropdown-usermenupull-right"style="width:35px">

<li>

@using(Html.BeginForm("LogOff","Account",FormMethod.Post,new{id="logoutForm",style="padding:12px0px;"}))

{

@Html.AntiForgeryToken()

<ahref="javascript:document.getElementById('logoutForm').submit()"rel="externalnofollow"><iclass="fafa-sign-outpull-right"></i>LogOut</a>

}

</li>

</ul>

</li>

<liclass="hidden-xs"><a><span>在线人数:@System.Web.HttpContext.Current.Application["OnLineUserCount"]人</span></a></li>

</ul>

2.后台逻辑处理代码：

后台的代码，主要是对前台点击按钮的事件进行处理：退出系统和清除系统Cookie

[HttpPost]

[AllowAnonymous]

[ValidateAntiForgeryToken]

publicActionResultLogOff()

{

FormsAuthentication.SignOut();//退出登录

System.Web.HttpContext.Current.Session.Abandon();//清理缓存

returnRedirectToAction("Login","Account");

}