How to delete cookie from .Net [duplicate]

 HttpCookie currentUserCookie = HttpContext.Current.Request.Cookies["currentUser"];
 HttpContext.Current.Response.Cookies.Remove("currentUser");
 currentUserCookie.Expires = DateTime.Now.AddDays(-10);
 currentUserCookie.Value = null;
 HttpContext.Current.Response.SetCookie(currentUserCookie);

It works.