asp net mvc - datetime sorunu

protected void Application_PreRequestHandlerExecute()
        {
            var currentCulture = (CultureInfo)Thread.CurrentThread.CurrentCulture.Clone();
            currentCulture.DateTimeFormat.ShortDatePattern = "dd/MM/yyyy";
            currentCulture.DateTimeFormat.DateSeparator = "/";
            Thread.CurrentThread.CurrentCulture = currentCulture;
            Thread.CurrentThread.CurrentUICulture = currentCulture;
        }