EPPlusHelper

        private string m_FilePath;private string m_DefaultDir;private string m_CreatingDate = DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss");private Stream m_Stream;                        //创建一个Stream对象private ExcelPackage m_ExcelPackage;            //创建一个ExcelPackage对象private ExcelWorksheet m_CurrentWorksheet;      //创建一个ExcelWorksheet对象/// <summary>/// 构造函数，默认路径/// </summary>public ExcelHelper_EPPlus(){m_DefaultDir = System.AppDomain.CurrentDomain.BaseDirectory + "Data\\";if (!Directory.Exists(m_DefaultDir))Directory.CreateDirectory(m_DefaultDir);m_FilePath = m_DefaultDir + m_CreatingDate + ".xlsx";}/// <summary>/// 构造函数，自定义路径/// </summary>/// <param name="strFilePath">Excel文件的绝对路径</param>public ExcelHelper_EPPlus(string strFilePath){if (Directory.Exists(strFilePath)){m_FilePath = strFilePath;}else{string strErrorMsg = string.Format("指定路径:{0}，文件未找到！", strFilePath);throw new Exception(strErrorMsg);}}/// <summary>/// 打开一个已有的工作簿或者创建一个Excel对象/// </summary>/// public ExcelPackage();/// public ExcelPackage(FileInfo newFile);/// public ExcelPackage(Stream newStream);public void OpenOrCreateExcel(){if (File.Exists(m_FilePath)){var file = new FileInfo(m_FilePath);m_ExcelPackage = new ExcelPackage(file);}else{m_Stream = File.Create(m_FilePath);m_ExcelPackage = new ExcelPackage(m_Stream);}m_CurrentWorksheet = GetOrAddWorkSheet();}

Worksheet相关操作

        /// <summary>/// 获取worksheet，没有时创建/// </summary>/// <returns></returns>public ExcelWorksheet GetOrAddWorkSheet(){ExcelWorksheet workSheet = m_ExcelPackage.Workbook.Worksheets.FirstOrDefault();if (workSheet == null)workSheet = m_ExcelPackage.Workbook.Worksheets.Add("Sheet1");return workSheet;}/// <summary>/// 根据工作表名获取Excel工作表对象/// </summary>/// <param name="sheetName">工作表名</param>/// <returns></returns>public ExcelWorksheet GetWorksheet(string sheetName){return m_ExcelPackage.Workbook.Worksheets.FirstOrDefault(i => i.Name == sheetName);}/// <summary>/// 根据工作表索引获取Excel工作表对象/// </summary>/// <param name="index">工作表序号,索引号从1开始</param>public ExcelWorksheet GetWorksheet(int index){return m_ExcelPackage.Workbook.Worksheets[index];}/// <summary>/// 给当前工作簿添加工作表/// </summary>/// <param name="sheetName">工作表名</param>/// <param name="isDeleteSameNameSheet">如果存在同名的sheet是否删除</param>public void AddWorkSheet(string sheetName, bool isDeleteSameNameSheet){if (isDeleteSameNameSheet){DeleteWorkSheet(sheetName);}else{while (m_ExcelPackage.Workbook.Worksheets.Any(i => i.Name == sheetName)){sheetName = sheetName + "(1)";}}m_ExcelPackage.Workbook.Worksheets.Add(sheetName);}/// <summary>/// 重命名工作表/// </summary>/// <param name="worksheet">工作表对象</param>/// <param name="newSheetName">新的工作表名</param>public void ReNameWorkSheet(ExcelWorksheet worksheet, string newSheetName){worksheet.Name = newSheetName;}/// <summary>/// 重命名工作表/// </summary>/// <param name="oldSheetName">原有工作表名</param>/// <param name="newSheetName">新的工作表名</param>public void ReNameWorkSheet(string oldSheetName, string newSheetName){var worksheet = GetWorksheet(oldSheetName);if (worksheet != null)worksheet.Name = newSheetName;}/// <summary>/// 删除指定的工作表/// </summary>/// <param name="SheetName">删除的工作表名</param>public void DeleteWorkSheet(string sheetName){var worksheet = m_ExcelPackage.Workbook.Worksheets.FirstOrDefault(i => i.Name == sheetName);if (worksheet != null)m_ExcelPackage.Workbook.Worksheets.Delete(worksheet);}/// <summary>/// 删除除指定worksheet外的其余工作表/// </summary>/// <param name="worksheet"></param>public void DeleteWorkSheetExcept(ExcelWorksheet worksheet){foreach (ExcelWorksheet sheet in m_ExcelPackage.Workbook.Worksheets){if (sheet != worksheet){m_ExcelPackage.Workbook.Worksheets.Delete(sheet);}}}

对行列的增删操作

     /// public void InsertRow(int rowFrom, int rows);/// public void InsertColumn(int columnFrom, int columns);/// public void DeleteRow(int rowFrom, int rows);/// public void DeleteColumn(int columnFrom, int columns);/// <summary>/// 获取当前工作表最后一行/// </summary>/// <returns></returns>public int GetRowIndex(){return m_CurrentWorksheet.Dimension.End.Row;}/// <summary>/// 获取当前工作表最后一列/// </summary>/// <returns></returns>public int GetColIndex(){return m_CurrentWorksheet.Dimension.End.Column;}/// <summary>/// 添加表头/// </summary>/// <param name="values"></param>public void AddHeader(object[] values){SetRowValues(1, values);}/// <summary>/// 插入数据行/// </summary>/// <param name="rowIndex">插入位置，起始位置为1</param>/// <param name="values">行类容，一个单元格一个对象</param>public void SetRowValues(int rowIndex, object[] values){for (int i = 1; i <= values.Length; i++){m_CurrentWorksheet.SetValue(rowIndex, i, values[i]);}}

对单元格操作

         /// <summary>/// 设置单元格的值/// </summary>/// <param name="X">写入的行</param>/// <param name="Y">写入的列</param>/// <param name="value">要写入的字符串</param>public void SetCellValue(int X, int Y, object value){m_CurrentWorksheet.SetValue(X, Y, value);}/// <summary>/// 获取单元格的值/// </summary>/// <param name="X">写入的行</param>/// <param name="Y">写入的列</param>public object GetCellValue(int X, int Y){return m_CurrentWorksheet.GetValue(X, Y);}

对Range操作

         /// <summary>/// 从二维数据集合中装载数据/// </summary>/// public ExcelRangeBase LoadFromCollection<T>(IEnumerable<T> Collection);/// public ExcelRangeBase LoadFromDataReader(IDataReader Reader, bool PrintHeaders);/// public ExcelRangeBase LoadFromText(FileInfo TextFile);  //这里的文件是指CSV文件/// <param name="table"></param>/// <param name="printHeaders"></param>public void SetRangeToWorkSheet(DataTable table, bool printHeaders){m_CurrentWorksheet.Cells["A1"].LoadFromDataTable(table, printHeaders);}/// <summary>/// 获取ExcelRange的值/// 3个获取单元格范围的方法：/// public ExcelRange this[string Address] { get; }     Address是指"A1:C5"这种格式/// public ExcelRange this[int Row, int Col] { get; }/// public ExcelRange this[int FromRow, int FromCol, int ToRow, int ToCol] { get; }/// 重要属性/// public object Value { get; set; }  //获取或设置单元格的值 /// </summary>/// <param name="startX">起始单元格行号</param>/// <param name="startY">起始单元格列号</param>/// <param name="endX">结束单元格行号</param>/// <param name="endY">结束单元格列号</param>/// <returns>Range对象</returns>public ExcelRange GetRangeFromWorkSheet(int startX, int startY, int endX, int endY){return m_CurrentWorksheet.Cells[startX, startY, endX, endY];}

        /// <summary>/// 保存修改/// </summary>/// <returns></returns>public void SaveExcel(){m_ExcelPackage.Save();}/// <summary>/// 文档另存为/// </summary>/// <param name="FileName">文件名</param>/// <returns></returns>public void SaveAsExcel(string FileName){var file = new FileInfo(FileName);m_ExcelPackage.SaveAs(file);}public void Dispose(){if (m_ExcelPackage != null){m_ExcelPackage.Dispose();}if (m_Stream != null){m_Stream.Dispose();m_Stream.Close();}}

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