/// <summary>
        /// 分解数据表
        /// </summary>
        /// <param name="orgTable">需要分解的表</param>
        /// <param name="rowsNum">每个表包含的数据量</param>
        /// <returns></returns>
        public static DataSet SplitDataTable(DataTable orgTable, int rowsNum)
        {
            var ds = new DataSet();
            if (rowsNum <= 0 || orgTable.Rows.Count <= 0)
            {
                ds.Tables.Add(orgTable);
                return ds;
            }
            var tableNum = Convert.ToInt32(Math.Ceiling(orgTable.Rows.Count * 1.0 / rowsNum));
            var remainder = orgTable.Rows.Count % rowsNum;
            if (tableNum == 1)
            {
                ds.Tables.Add(orgTable);
            }
            else
            {
                for (var i = 0; i < tableNum; i++)
                {
                    var table = orgTable.Clone();
                    int num;
                    if (i != tableNum - 1)
                        num = rowsNum;
                    else
                        num = remainder > 0 ? remainder : rowsNum;
                    for (var j = 0; j < num; j++)
                    {
                        var row = orgTable.Rows[i * rowsNum + j];
                        table.ImportRow(row);
                    }
                    ds.Tables.Add(table);
                }
            }
            return ds;
        }