@if (Request.IsAuthenticated) {
    <text>
        你好，@Html.ActionLink(User.Identity.Name, "Manage", "Account", routeValues: null, htmlAttributes: new { @class = "username", title = "管理" })!
        
            @Html.ActionLink("注销", "LogOff", "Account")
    </text>
} 

else 
{
    <ul>
        <li>@Html.ActionLink("注册", "Register", "Account", routeValues: null, htmlAttributes: new { id = "registerLink" })</li>
        <li>@Html.ActionLink("登录", "Login", "Account", routeValues: null, htmlAttributes: new { id = "loginLink" })</li>
    </ul>

}

// POST: /Account/LogOff

        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult LogOff()
        {
            WebSecurity.Logout();
            return RedirectToAction("Index", "Home");
        }