/// <summary> /// 分解数据表 /// </summary> /// <param name="originalTab">需要分解的表</param> /// <param name="rowsNum">每个表包含的数据量</param> /// <returns></returns> public static List<DataTable> SplitDataTable(DataTable originalTab, int rowsNum) { //获取所需创建的表数量 int tableNum = originalTab.Rows.Count / rowsNum; //获取数据余数 int remainder = originalTab.Rows.Count % rowsNum; List<DataTable> ds = new List<DataTable>(); //如果只需要创建1个表,直接将原始表存入DataSet if (tableNum == 0) { ds.Add(originalTab); } else { DataTable[] tableSlice = new DataTable[tableNum]; for (int c = 0; c < tableNum; c++) { tableSlice[c] = new DataTable(); foreach (DataColumn dc in originalTab.Columns) { tableSlice[c].Columns.Add(dc.ColumnName, dc.DataType); } } for (int i = 0; i < tableNum; i++) { if (i != tableNum - 1) { for (int j = i * rowsNum; j < ((i + 1) * rowsNum); j++) { tableSlice[i].ImportRow(originalTab.Rows[j]); } } else { for (int k = i * rowsNum; k < ((i + 1) * rowsNum + remainder); k++) { tableSlice[i].ImportRow(originalTab.Rows[k]); } } } foreach (DataTable dt in tableSlice) { ds.Add(dt); } } return ds; }