public static object GetCell(CacheControl cc, int row, string columnName, out int errorCode)
        {
            object value   = null;
            object errCode = null;

            cc.GetCell(row, columnName, ref value, ref errCode);
            errorCode = (int)errCode;
            if (value != null)
            {
                return(value);
            }
            return(string.Empty);
        }
        public static object GetCell(CacheControl cc, int row, string columnName, out int errorCode)
        {
            object value   = null;
            object errCode = null;

            try
            {
                cc.GetCell(row, columnName, ref value, ref errCode);
            }
            catch (Exception e)
            {
                Console.WriteLine("Exception: " + e.Message + " " + e.StackTrace);
            }
            errorCode = (int)errCode;
            if (value != null)
            {
                return(value);
            }
            return(string.Empty);
        }