private void buttonExcel_Click(object sender, EventArgs e) { FileStream fs = null; List<ISheet> lstISheet = new List<ISheet>(); string Msg = ""; string filePath = ""; //初始化一个OpenFileDialog类 OpenFileDialog fileDialog = new OpenFileDialog(); //判断用户是否正确的选择了文件 if (fileDialog.ShowDialog() == DialogResult.OK) { //获取用户选择文件的后缀名 string extension = Path.GetExtension(fileDialog.FileName); //声明允许的后缀名 string[] str = new string[] { ".xls", ".xlsx" }; if (!((IList)str).Contains(extension)) { MessageBox.Show("仅能选择Excel文件"); } else { filePath = fileDialog.FileName; } } if(filePath!="") { IWorkbook book2003; IWorkbook book2007; bool bl2003 = true; bool bl2007 = true; fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); try { book2003 = new HSSFWorkbook(fs);// 2003版本 int t = 0; while (true) { try { ISheet sheettemp = book2003.GetSheetAt(t); lstISheet.Add(sheettemp); t = t + 1; } catch (Exception ex) { break; } } } catch (Exception ex) { bl2003 = false; Msg = ex.Message.ToString() + " " + ex.StackTrace.ToString(); fs.Dispose(); fs.Close(); } // if(bl2003==false) { fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); try { book2007 = new XSSFWorkbook(fs);// 2007版本 int t = 0; while (true) { try { ISheet sheettemp = book2007.GetSheetAt(t); lstISheet.Add(sheettemp); t = t+1; } catch (Exception ex) { break; } } } catch (Exception ex) { bl2007 = false; Msg = ex.Message.ToString() + " " + ex.StackTrace.ToString(); } } ReLstDataTable(lstISheet); fs.Dispose(); fs.Close(); } } public List<DataTable> ReLstDataTable(List<ISheet> lstISheet) { List<DataTable> lstTable = new List<DataTable>(); for (int t = 0; t < lstISheet.Count; t++) { ISheet sheet = lstISheet[t]; int rowCount = sheet.LastRowNum;//总行数 if (rowCount > 0) { IRow firstRow = sheet.GetRow(0);//第一行 int cellCount = firstRow.LastCellNum;//列数 DataTable dt = new DataTable(); int startRow = 1;//如果第一行是列名，则从第二行开始读取 for (int i = firstRow.FirstCellNum; i < cellCount; ++i) { ICell cell = firstRow.GetCell(i); if (cell != null) { if (cell.StringCellValue != null) { DataColumn column = new DataColumn(cell.StringCellValue); dt.Columns.Add(column); } } } //------------------------------------------------ //填充行 for (int i = startRow; i <= rowCount; ++i) { IRow row = sheet.GetRow(i); if (row == null) continue; DataRow dataRow = dt.NewRow(); for (int j = row.FirstCellNum; j < cellCount; ++j) { ICell cell = row.GetCell(j); if (cell == null) { dataRow[j] = ""; } else { //CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,) switch (cell.CellType) { case CellType.Blank: dataRow[j] = ""; break; case CellType.Numeric: short format = cell.CellStyle.DataFormat; //对时间格式（2015.12.5、2015/12/5、2015-12-5等）的处理 if (format == 14 || format == 31 || format == 57 || format == 58) dataRow[j] = cell.DateCellValue; else dataRow[j] = cell.NumericCellValue; break; case CellType.String: dataRow[j] = cell.StringCellValue; break; } } } dt.Rows.Add(dataRow); } //------------------------------------------------ lstTable.Add(dt); } } return lstTable; }
public class NPOIExcel { #region ========================获取Sheet集合======================== /// <summary> /// 获取工作表列表 /// </summary> /// <param name="lstsheet"></param> /// <returns></returns> public List<string> LstSheetName(List<ISheet> lstsheet) { List<string> lst = new List<string>(); for (int i = 0; i < lstsheet.Count; i++) { lst.Add(lstsheet[i].SheetName); } return lst; } /// <summary> /// 返回sheet表集合 /// </summary> /// <param name="file"></param> /// <returns></returns> public List<ISheet> ExcelToISheetList(string file) { string fileExt = Path.GetExtension(file).ToLower(); List<ISheet> lstSheet = new List<ISheet>(); bool bl = true; //XSSFWorkbook 适用XLSX格式:2007以上 try { lstSheet = GetExcelSheetList2007(file); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { lstSheet = GetExcelSheetList2003(file); } catch (Exception ex) { bl = false; } } return lstSheet; } /// <summary> /// 03版获取 sheet列表 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public List<ISheet> GetExcelSheetList2003(string files) { List<ISheet> lstsheet = new List<ISheet>(); //HSSFWorkbook 适用XLS格式：2003版 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2003 = new HSSFWorkbook(fs); int t = 0; while (true) { try { ISheet sheet = workbook2003.GetSheetAt(t); if (sheet != null) { lstsheet.Add(sheet); } else { break; } } catch (Exception) { break; } t = t + 1; } } return lstsheet; } /// <summary> ///获取 2007版列表 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public List<ISheet> GetExcelSheetList2007(string files) { List<ISheet> lstsheet = new List<ISheet>(); //XSSFWorkbook 适用XLSX格式:2007以上 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2007 = new XSSFWorkbook(fs); int t = 0; while (true) { try { ISheet sheet = workbook2007.GetSheetAt(t); if (sheet != null) { lstsheet.Add(sheet); } else { break; } } catch (Exception) { break; } t = t + 1; } } return lstsheet; } #endregion========================获取Sheet集合======================== #region ========================获取sheet表数据======================== /// <summary> /// 获取sheet的所有列 /// </summary> /// <param name="sheet"></param> /// <returns></returns> public List<string> GetSheetColName(ISheet sheet) { //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 获取 sheet表数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet(string files, string sheetname) { List<ISheet> lstsheet = new List<ISheet>(); bool bl = true; try { ISheet sheet = GetExcelsheet2007(files, sheetname); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { ISheet sheet = GetExcelsheet2003(files, sheetname); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } } return lstsheet[0]; } /// <summary> /// 03版获取 sheet表数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet2003(string files, string sheetname) { DataTable dt = new DataTable(); ISheet sheet; //HSSFWorkbook 适用XLS格式：2003版 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2003 = new HSSFWorkbook(fs); sheet = workbook2003.GetSheet(sheetname); } return sheet; } /// <summary> /// 2007 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet2007(string files, string sheetname) { ISheet sheet; //XSSFWorkbook 适用XLSX格式:2007以上 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2007 = new XSSFWorkbook(fs); sheet = workbook2007.GetSheet(sheetname); } return sheet; } #endregion========================获取sheet表数据======================== /// <summary> /// 获取单元格类型 /// </summary> /// <param name="cell"></param> /// <returns></returns> private static object GetValueType(ICell cell) { if (cell == null) return null; switch (cell.CellType) { case CellType.Blank: //BLANK: return null; case CellType.Boolean: //BOOLEAN: return cell.BooleanCellValue; case CellType.Numeric: //NUMERIC: return cell.NumericCellValue; case CellType.String: //STRING: return cell.StringCellValue; case CellType.Error: //ERROR: return cell.ErrorCellValue; case CellType.Formula: //FORMULA: default: return "=" + cell.CellFormula; } } }
public class ZCDExcel { /// <summary> /// 文件路径 /// </summary> public string FilePath { get; set; } public ZCDExcel() { } /// <summary> /// 配置Excel文件路径 /// </summary> /// <param name="files"></param> public ZCDExcel(string files) { FilePath = files; } #region ========================获取所有sheet表名称的List<string>集合======================== /// <summary> /// 根据Excel文件名，获取工作表列表 /// </summary> /// <returns>返回List string 集合</returns> public List<string> LstSheetName() { List<ISheet> lstsheet = ExcelToISheetList(FilePath); List<string> lst = new List<string>(); for (int i = 0; i < lstsheet.Count; i++) { lst.Add(lstsheet[i].SheetName); } return lst; } /// <summary> /// 根据Excel文件名，获取工作表列表 /// </summary> /// <param name="files">文件名</param> /// <returns>返回List string 集合</returns> public List<string> LstSheetName(string files) { List<ISheet> lstsheet = ExcelToISheetList(files); List<string> lst = new List<string>(); for (int i = 0; i < lstsheet.Count; i++) { lst.Add(lstsheet[i].SheetName); } return lst; } /// <summary> /// List ISheet对象集合 获取工作表列表 /// </summary> /// <param name="lstsheet">List ISheet 对象集合</param> /// <returns>返回List string 集合</returns> public List<string> LstSheetName(List<ISheet> lstsheet) { List<string> lst = new List<string>(); for (int i = 0; i < lstsheet.Count; i++) { lst.Add(lstsheet[i].SheetName); } return lst; } #endregion========================获取所有sheet表名称的List<string>集合======================== #region ============================获取ISheet对象的List<ISheet>表集合============================ /// <summary> /// 返回sheet表集合 /// </summary> /// <returns></returns> public List<ISheet> ExcelToISheetList() { string fileExt = Path.GetExtension(FilePath).ToLower(); List<ISheet> lstSheet = new List<ISheet>(); bool bl = true; //XSSFWorkbook 适用XLSX格式:2007以上 try { lstSheet = GetExcelSheetList2007(FilePath); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { lstSheet = GetExcelSheetList2003(FilePath); } catch (Exception ex) { bl = false; } } return lstSheet; } /// <summary> /// 返回sheet表集合 /// </summary> /// <param name="file">文件路径</param> /// <returns>ISheet的list集合</returns> public List<ISheet> ExcelToISheetList(string file) { string fileExt = Path.GetExtension(file).ToLower(); List<ISheet> lstSheet = new List<ISheet>(); bool bl = true; //XSSFWorkbook 适用XLSX格式:2007以上 try { lstSheet = GetExcelSheetList2007(file); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { lstSheet = GetExcelSheetList2003(file); } catch (Exception ex) { bl = false; } } return lstSheet; } #endregion ============================获取ISheet对象的List<ISheet>表集合============================ #region ============================03版和07版获取 List<ISheet>============================ /// <summary> /// 03版获取 sheet列表 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public List<ISheet> GetExcelSheetList2003(string files) { List<ISheet> lstsheet = new List<ISheet>(); //HSSFWorkbook 适用XLS格式：2003版 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2003 = new HSSFWorkbook(fs); int t = 0; while (true) { try { ISheet sheet = workbook2003.GetSheetAt(t); if (sheet != null) { lstsheet.Add(sheet); } else { break; } } catch (Exception) { break; } t = t + 1; } } return lstsheet; } /// <summary> ///获取 2007版列表 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public List<ISheet> GetExcelSheetList2007(string files) { List<ISheet> lstsheet = new List<ISheet>(); //XSSFWorkbook 适用XLSX格式:2007以上 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2007 = new XSSFWorkbook(fs); int t = 0; while (true) { try { ISheet sheet = workbook2007.GetSheetAt(t); if (sheet != null) { lstsheet.Add(sheet); } else { break; } } catch (Exception) { break; } t = t + 1; } } return lstsheet; } #endregion ==============03版和07版获取 List<ISheet>============== #region ========================获取sheet对象======================== /// <summary> /// 根据sheet表索引 获取 sheet表数据 ；文件路径需要事先配置好文件路径 /// </summary> /// <param name="Index">工作表（sheet表）索引</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet(int Index) { List<ISheet> lstsheet = new List<ISheet>(); bool bl = true; try { ISheet sheet = GetExcelsheet2007(FilePath, Index); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { ISheet sheet = GetExcelsheet2003(FilePath, Index); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } } return lstsheet[0]; } /// <summary> /// 根据sheet表名 获取 sheet表数据 ；文件路径需要事先配置好文件路径 /// </summary> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet(string sheetname) { List<ISheet> lstsheet = new List<ISheet>(); bool bl = true; try { ISheet sheet = GetExcelsheet2007(FilePath, sheetname); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { ISheet sheet = GetExcelsheet2003(FilePath, sheetname); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } } return lstsheet[0]; } /// <summary> /// 根据sheet表索引 获取 sheet表数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="Index">工作表（sheet表）索引</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet(string files, int Index) { List<ISheet> lstsheet = new List<ISheet>(); bool bl = true; try { ISheet sheet = GetExcelsheet2007(files, Index); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { ISheet sheet = GetExcelsheet2003(files, Index); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } } return lstsheet[0]; } /// <summary> /// 根据sheet表名 获取 sheet表数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet(string files, string sheetname) { List<ISheet> lstsheet = new List<ISheet>(); bool bl = true; try { ISheet sheet = GetExcelsheet2007(files, sheetname); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } //HSSFWorkbook 适用XLS格式：2003版 if (bl == false) { bl = true; try { ISheet sheet = GetExcelsheet2003(files, sheetname); lstsheet.Add(sheet); } catch (Exception ex) { bl = false; } } return lstsheet[0]; } /// <summary> /// 03版 根据sheet表名 获取 sheet表数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet2003(string files, string sheetname) { DataTable dt = new DataTable(); ISheet sheet; //HSSFWorkbook 适用XLS格式：2003版 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2003 = new HSSFWorkbook(fs); sheet = workbook2003.GetSheet(sheetname); } return sheet; } /// <summary> /// 03版 根据sheet表索引 获取 sheet表数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="Index">sheet表索引</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet2003(string files, int Index) { DataTable dt = new DataTable(); ISheet sheet; //HSSFWorkbook 适用XLS格式：2003版 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2003 = new HSSFWorkbook(fs); sheet = workbook2003.GetSheetAt(Index); } return sheet; } /// <summary> /// 2007版 更加sheet表名 获取sheet对象 /// </summary> /// <param name="files">文件路径</param> /// <param name="sheetname">sheet表名</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet2007(string files, string sheetname) { ISheet sheet; //XSSFWorkbook 适用XLSX格式:2007以上 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2007 = new XSSFWorkbook(fs); sheet = workbook2007.GetSheet(sheetname); } return sheet; } /// <summary> /// 2007版 根据sheet表索引 获取sheet对象 /// </summary> /// <param name="files">文件路径</param> /// <param name="Index">sheet表索引</param> /// <returns>ISheet</returns> public ISheet GetExcelsheet2007(string files, int Index) { ISheet sheet; //XSSFWorkbook 适用XLSX格式:2007以上 using (FileStream fs = new FileStream(files, FileMode.Open, FileAccess.Read)) { IWorkbook workbook2007 = new XSSFWorkbook(fs); sheet = workbook2007.GetSheetAt(Index);//.GetSheet(sheetname); } return sheet; } #endregion========================获取sheet表数据======================== #region ======================返回工作表数据DataTable或者DataSet======================= /// <summary> /// 返回第一个sheet表的数据 /// </summary> /// <returns>返回DataTable</returns> public DataTable GetFistSheetTable() { ISheet sheet = GetExcelsheet(FilePath, 0); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回第一个sheet表的数据 /// </summary> /// <param name="files">文件路径</param> /// <returns>返回DataTable</returns> public DataTable GetFistSheetTable(string files) { ISheet sheet = GetExcelsheet(files, 0); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回最后个sheet表的数据 /// </summary> /// <returns>返回DataTable</returns> public DataTable GetLastSheetTable() { List<string> lst = LstSheetName(FilePath); ISheet sheet = GetExcelsheet(FilePath, lst.Count - 1); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回最后个sheet表的数据 /// </summary> /// <param name="files">文件路径</param> /// <returns>返回DataTable</returns> public DataTable GetLastSheetTable(string files) { List<string> lst = LstSheetName(files); ISheet sheet = GetExcelsheet(files, lst.Count - 1); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回第一个sheet表的数据 /// </summary> /// <param name="Index">文件路径</param> /// <returns>返回DataTable</returns> public DataTable GetSheetTable(int Index) { ISheet sheet = GetExcelsheet(FilePath, Index); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回第一个sheet表的数据 /// </summary> /// <param name="SheetName">工作表名称</param> /// <returns>返回DataTable</returns> public DataTable GetSheetTable(string SheetName) { ISheet sheet = GetExcelsheet(FilePath, SheetName); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回第一个sheet表的数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="SheetName">工作表名称</param> /// <returns>返回DataTable</returns> public DataTable GetSheetTable(string files,string SheetName) { ISheet sheet = GetExcelsheet(files, SheetName); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回第一个sheet表的数据 /// </summary> /// <param name="files">文件路径</param> /// <param name="Index">工作表索引</param> /// <returns>返回DataTable</returns> public DataTable GetSheetTable(string files, int Index) { ISheet sheet = GetExcelsheet(files, Index); DataTable dt = GetSheetTable(sheet); return dt; } /// <summary> /// 返回 Excel所有工作表的数据 /// </summary> /// <returns>DataSet</returns> public DataSet GetSheetDataSet() { List<ISheet> LstSheet = ExcelToISheetList(FilePath); DataSet ds = GetSheetDataSet(LstSheet); return ds; } /// <summary> /// 返回 Excel所有工作表的数据 /// </summary> /// <param name="file">Excel文件路径</param> /// <returns>DataSet</returns> public DataSet GetSheetDataSet(string file) { List<ISheet> LstSheet = ExcelToISheetList(file); DataSet ds = GetSheetDataSet(LstSheet); return ds; } /// <summary> /// 根据Sheet对象，获取sheet表的数据 /// </summary> /// <param name="sheet">工作表对象</param> /// <returns>返回DataTable</returns> public DataTable GetSheetTable(ISheet sheet) { DataTable dt = new DataTable(); dt.TableName = sheet.SheetName; //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<int> columns = new List<int>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { dt.Columns.Add(new DataColumn("列" + (i + 1).ToString())); } else { dt.Columns.Add(new DataColumn(obj.ToString())); } columns.Add(i); } //数据 for (int i = sheet.FirstRowNum + 1; i <= sheet.LastRowNum; i++) { DataRow dr = dt.NewRow(); bool hasValue = false; foreach (int j in columns) { dr[j] = GetValueType(sheet.GetRow(i).GetCell(j)); if (dr[j] != null && dr[j].ToString() != string.Empty) { hasValue = true; } } if (hasValue) { dt.Rows.Add(dr); } } return dt; } /// <summary> /// 根据Sheet对象，获取sheet表的数据 /// </summary> /// <param name="sheet">工作表对象</param> /// <returns>返回DataTable</returns> public DataSet GetSheetDataSet(List<ISheet> LstSheet) { DataSet ds = new DataSet(); for (int t = 0; t < LstSheet.Count; t++) { DataTable dt = new DataTable(); ISheet sheet = LstSheet[t]; if (sheet != null) { dt.TableName = sheet.SheetName; } //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<int> columns = new List<int>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { dt.Columns.Add(new DataColumn("列" + (i + 1).ToString())); } else { dt.Columns.Add(new DataColumn(obj.ToString())); } columns.Add(i); } //数据 for (int i = sheet.FirstRowNum + 1; i <= sheet.LastRowNum; i++) { DataRow dr = dt.NewRow(); bool hasValue = false; foreach (int j in columns) { dr[j] = GetValueType(sheet.GetRow(i).GetCell(j)); if (dr[j] != null && dr[j].ToString() != string.Empty) { hasValue = true; } } if (hasValue) { dt.Rows.Add(dr); } } ds.Tables.Add(dt); } return ds; } #endregion ======================返回工作表数据DataTable或者DataSet======================= #region ==============================获取特定的sheet的所有列的名称============================= /// <summary> /// 根据Sheet表索引，获取sheet的所有列的名称 /// </summary> /// <param name="Index">Sheet表的索引</param> /// <returns> List字符串集合 列名称 </returns> public List<string> GetSheetColName(int Index) { ISheet sheet = GetExcelsheet(FilePath, Index); //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 获取最后一个sheet表的所有列的名称 /// </summary> /// <returns> List字符串集合 列名称 </returns> public List<string> GetLastSheetColName() { List<string> lst = LstSheetName(FilePath); ISheet sheet = GetExcelsheet(FilePath,lst.Count-1); //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 获取最后一个sheet表的所有列的名称 /// </summary> /// <param name="Files">文件路径</param> /// <returns> List字符串集合 列名称 </returns> public List<string> GetLastSheetColName(string Files) { List<string> lst = LstSheetName(FilePath); ISheet sheet = GetExcelsheet(Files, lst.Count-1); //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 根据Sheet表名称，获取sheet的所有列的名称 /// </summary> /// <returns> List字符串集合 列名称 </returns> public List<string> GetSheetColName(string SheetName) { ISheet sheet = GetExcelsheet(FilePath, SheetName); //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 根据Sheet对象，获取sheet的所有列的名称 /// </summary> /// <param name="sheet">ISheet 对象</param> /// <returns> List字符串集合 列名称 </returns> public List<string> GetSheetColName(ISheet sheet) { //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 根据Sheet表索引，获取sheet的所有列的名称 /// </summary> /// <param name="Index">Sheet表的索引</param> /// <returns> List字符串集合 列名称 </returns> public List<string> GetSheetColName(string files, int Index) { ISheet sheet = GetExcelsheet(files, Index); //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } /// <summary> /// 根据Sheet表名称，获取sheet的所有列的名称 /// </summary> /// <param name="SheetName">Sheet表的名称</param> /// <returns> List字符串集合 列名称 </returns> public List<string> GetSheetColName(string files, string SheetName) { ISheet sheet = GetExcelsheet(files, SheetName); //表头 IRow header = sheet.GetRow(sheet.FirstRowNum); List<string> lstSheetColName = new List<string>(); for (int i = 0; i < header.LastCellNum; i++) { object obj = GetValueType(header.GetCell(i)); if (obj == null || obj.ToString() == string.Empty) { lstSheetColName.Add("列" + (i + 1)); } else { lstSheetColName.Add(obj.ToString()); } } return lstSheetColName; } #endregion =====================获取特定的sheet的所有列的名称==================== /// <summary> /// 获取单元格类型 /// </summary> /// <param name="cell"></param> /// <returns></returns> private static object GetValueType(ICell cell) { if (cell == null) return null; switch (cell.CellType) { case CellType.Blank: //BLANK: return null; case CellType.Boolean: //BOOLEAN: return cell.BooleanCellValue; case CellType.Numeric: //NUMERIC: return cell.NumericCellValue; case CellType.String: //STRING: return cell.StringCellValue; case CellType.Error: //ERROR: return cell.ErrorCellValue; case CellType.Formula: //FORMULA: default: return "=" + cell.CellFormula; } } }