/// <summary>
        /// 處理  無效的 URI: URI 字串太長。問題
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        static string MyEscapeDataString(string value)
        {
            int limit = 4000;
            StringBuilder sb 
 
= new StringBuilder();
            int loops = value.Length / limit;
            for (int i = 0; i <= loops; i++)
            {
                sb.Append(i < loops
                    ? Uri.EscapeDataString(value.Substring(limit * i, limit))
                    : Uri.EscapeDataString(value.Substring(limit 
 
* i)));
            }

            return sb.ToString();
        }