private List <long> GetAllReadyMarked(IEnumerable <string> marked)
        {
            var markedList = new List <long>();

            if (marked != null && marked.Count() > 0)
            {
                foreach (var mark in marked)
                {
                    string[] markStr = mark.Split(';');
                    markedList.AddRange(markStr.Where(p => !string.IsNullOrEmpty(p)).Select(i => NumberConvert.GetOnlyNumbers(i)));
                }
            }
            return(markedList);
        }