ASP.NET MVC 3註銷

Question

如果用戶當前已登錄，我想呈現註銷按鈕。

我想把按鈕放在_Layout.cshtml頁面中。

如何檢查用戶是否已登錄？

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") 

}