c# Cookie的操作

#region Cookie的操作：Cookie的读取、Cookie的保存
    /// <summary>
    /// 静态方法：保存Cookie
    /// </summary>
    /// <param name="Hash">内容</param>
    /// <param name="_remberme">存cookie天数</param>
    /// <param name="_CookieName">cookie名</param>
    public static void SaveCookie(Hashtable Hash, int _remberme, string _CookieName)
    {
        string DoMain = "";
        string[] Arr = HttpContext.Current.Request.Url.Host.Split('.');
        for (int i = 1; i < Arr.Length; i++)
        {
            DoMain += "." + Arr[i];
        }
        if (_CookieName == "")
        {
            _CookieName = ConfigurationManager.AppSettings["CookieName"];
        }
        HttpCookie Cookie = new HttpCookie(_CookieName);
        foreach (DictionaryEntry entry in Hash)
        {
            Cookie[entry.Key.ToString()] = entry.Value.ToString();
        }
        //Cookie.Domain = ConfigurationManager.AppSettings["CookieDoMain"];
        Cookie.Expires = DateTime.UtcNow.AddDays(_remberme);
        Cookie.Domain = DoMain;
        HttpContext.Current.Response.Cookies.Add(Cookie);
    }

    /// <summary>
    /// 静态方法：读取Cookie的值
    /// </summary>
    /// <param name="_name">Cookie  key</param>
    /// <returns></returns>
    public static string GetCookie(string _name)
    {
        HttpCookie Cookie = HttpContext.Current.Request.Cookies.Get(ConfigurationManager.AppSettings["CookieName"]);
        if (Cookie != null)
        {
            string DoMain = "";
            string[] Arr = HttpContext.Current.Request.Url.Host.Split('.');
            for (int i = 1; i < Arr.Length; i++)
            {
                DoMain += "." + Arr[i];
            }
            Cookie.Domain = DoMain;
            return Cookie[_name];
        }
        else
        {
            return "";
        }

    }

    /// <summary>
    /// 静态方法：读取Cookie的值
    /// </summary>
    /// <param name="_name">Cookie  key</param>
    /// <param name="_CookieName">cookie名</param>
    /// <returns></returns>
    public static string GetCookie(string _name, string _CookieName)
    {
        if (_CookieName == "")
        {
            _CookieName = ConfigurationManager.AppSettings["CookieName"];
        }
        HttpCookie Cookie = HttpContext.Current.Request.Cookies.Get(_CookieName);
        if (Cookie != null)
        {
            string DoMain = "";
            string[] Arr = HttpContext.Current.Request.Url.Host.Split('.');
            for (int i = 1; i < Arr.Length; i++)
            {
                DoMain += "." + Arr[i];
            }
            Cookie.Domain = DoMain;
            return Cookie[_name];
        }
        else
        {
            return "";
        }

    }
    #endregion