/// <summary>
        /// 分割数据集
        /// </summary>
        /// <param name="dtData">数据集</param>
        /// <param name="Number">分多少个</param>
        /// <returns></returns>
        private IList<DataTable> ListData(DataTable dtData, int Number)
        {
      
            List<DataTable> dtList = new List<DataTable>();
            double meiye=Math.Ceiling(dtData.Rows.Count / (double)Number);
            for (int i = 0; i < Math.Ceiling(dtData.Rows.Count / (double)meiye); i++)
            {
                DataTable subdt = new DataTable();
                subdt = dtData.Clone();
                dtData.AsEnumerable().Skip(Convert.ToInt32(meiye * i)).Take(Convert.ToInt32(meiye)).ToList().ForEach(name => subdt.ImportRow(name));
                dtList.Add(subdt);
            }
            return dtList;
        }