asp.net-mvc - ASP.NET MVC 3 注销

Question

如果用户当前已登录，我想呈现注销按钮。

我想把按钮放在 _Layout.cshtml 页面中。

如何检查用户是否已登录？

Answer 1

@if(Request.IsAuthenticated) {
    @Html.ActionLink("Your text goes here.", "LogOff", "YourControllerName", null, null)
}

Answer 2

If you are using Form Authentication , try 

// Inside Controller

public ActionResult LogOff()
{
    FormsAuthentication.SignOut();
    return RedirectToAction("Index", "Home");
}

// Inside View (Layout Page) Razor Engine

@if(User.Identity.IsAuthenticated){

  @Html.ActionLink("Your text goes here.", "LogOff", "YourControllerName")

}