[C#]Cookie訪問標準代碼

 封裝代碼如下：

 

public class CookieUtility
    {
        /// <summary>
        /// 擷取指定名稱的Cookie值
        /// </summary>
        /// <param name="CookieName">Cookie名稱</param>
        /// <returns></returns>
        public static string GetCookieValue(string CookieName)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[CookieName];
            if (cookie != null && !String.IsNullOrEmpty(cookie.Value))
            {
                return cookie.Value;
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 清除制定名稱的Cookie
        /// </summary>
        /// <param name="CookieName">Cookie名稱</param>
        public static void RemoveCookie(string CookieName)
        {
            HttpCookie cookie = new HttpCookie(CookieName, String.Empty);
            HttpContext.Current.Response.Cookies.Add(cookie);
        }

        /// <summary>
        /// 新增Cookie
        /// </summary>
        /// <param name="CookieName">Cookie名稱</param>
        /// <param name="CookieValue">Cookie值</param>
        public static void AddCookie(string CookieName, string CookieValue)
        {
            HttpCookie cookie = new HttpCookie(CookieName, CookieValue);
            cookie.Expires = DateTime.MaxValue;
            HttpContext.Current.Response.Cookies.Add(cookie);
        }
    }