NOPI所有dll

引用之后，使用该方法读取excel文件 #region 读取Excel public static DataTable ImportExcel(string filePath) { try { //根据路径通过已存在的excel来创建HSSFWorkbook，即整个excel文档 FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); //判断文件后缀名是xls，还是xlsx，如果是xls，使用HSSFWorkbook；如果是xlsx，使用XSSFWorkbook XSSFWorkbook workbook = new XSSFWorkbook(file); //获取excel的第一个sheet ISheet sheet = workbook.GetSheetAt(0); DataTable table = new DataTable(); //获取sheet的首行 IRow headerRow = sheet.GetRow(0); if (headerRow == null) headerRow = sheet.GetRow(1); //一行最后一个方格的编号 即总的列数 int cellCount = headerRow.LastCellNum; for (int i = headerRow.FirstCellNum; i < cellCount; i++) { ICell cell = headerRow.GetCell(i); if (cell != null) { DataColumn column = new DataColumn(cell.StringCellValue); table.Columns.Add(column); } } //最后一列的标号 即总的行数 // int rowCount = sheet.LastRowNum; cellCount = table.Columns.Count; for (int i = (sheet.FirstRowNum + 1); i <= sheet.LastRowNum; i++) { IRow row = sheet.GetRow(i); if (row == null) continue; DataRow dataRow = table.NewRow(); bool isAdd = false; for (int j = row.FirstCellNum; j < cellCount; j++) { if (row.GetCell(j) == null) continue; //row.GetCell(j).SetCellType(CellType.STRING); if (row.GetCell(j) != null) { if (row.GetCell(j).CellType == CellType.NUMERIC) dataRow[j] = (int)(row.GetCell(j).NumericCellValue); else dataRow[j] = row.GetCell(j).StringCellValue; isAdd = true; } } if (isAdd) table.Rows.Add(dataRow); } workbook = null; sheet = null; return table; } catch (Exception ex) { MessageBox.Show(ex.ToString()); return null; } } #endregion