//-------------------------------------------------------------------------------------// All Rights Reserved , Copyright (C) 2013 , DZD , Ltd .//-------------------------------------------------------------------------------------using System;using System.Data;using System.Data.OleDb;using System.Diagnostics;using System.IO;using System.Text;using System.Windows.Forms;using NPOI.HPSF;using NPOI.HSSF.UserModel;using NPOI.HSSF.Util;using NPOI.SS.UserModel;using NPOI.XSSF.UserModel;namespace MatchStall{    /// <summary>    /// Excel操作类，这里的NPOI使用的是2.0.1 (beta1)版本的    ///    /// 修改纪录    ///    ///        2013-10-25 版本：1.0 yanghenglian 创建主键，注意命名空间的排序。    ///        2013-11-01 版本：1.0 yanghenglian 添加了支持B/S的导出和导入以及C/S的导出和导入功能，代码感觉可以在优化，开心。    ///        2014-01-16 版本：1.0 yanghenglian 添加了支持xlsxExcel文件读取判断    ///     /// 版本：1.0    ///    /// <author>    ///        <name>yanghenglian</name>    ///        <date>2013-11-01</date>    /// </author>    /// </summary>    public class ExcelHelper    {        private static HSSFWorkbook _hssfworkbook;        /********************************************************下面的五个是最终版本适合B/S和C/S*****************************************************/        #region ExcelToDataTable(string strExcelFileName, string strSheetName) Excel转换成DataTable--B/S和C/S都可以使用        /// <summary>        /// Excel转换成DataTable        /// </summary>        /// <param name="strExcelFileName">文件路径</param>        /// <param name="strSheetName">Excel中对应的sheet表单名称,如:sheet1,sheet2</param>        /// <returns>数据集</returns>        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security", "CA2100:检查 SQL 查询是否存在安全漏洞")]        public static DataTable ExcelToDataTable(string strExcelFileName, string strSheetName)        {            string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + strExcelFileName + ";" +                             "Extended Properties=Excel 5.0;";            string strExcel = string.Format("select * from [{0}$]", strSheetName);            DataSet ds = new DataSet();            using (OleDbConnection conn = new OleDbConnection(strConn))            {                conn.Open();                OleDbDataAdapter adapter = new OleDbDataAdapter(strExcel, strConn);                adapter.Fill(ds, strSheetName);                conn.Close();                return ds.Tables[strSheetName];            }        }        #endregion        #region DataTable ExcelToDataTable(string strFileName, int sheetIndex = 0) 根据索引读取Sheet表数据，默认读取第一个sheet--B/S和C/S都可以使用        /// <summary>读取excel        /// 根据索引读取Sheet表数据，默认读取第一个sheet        /// </summary>        /// <param name="strFileName">excel文档路径</param>        /// <param name="sheetIndex">sheet表的索引，从0开始</param>        /// <returns>数据集</returns>        public static DataTable ExcelToDataTable(string strFileName, int sheetIndex = 0)        {            DataTable dt = new DataTable();            HSSFWorkbook hssfworkbook = null;            XSSFWorkbook xssfworkbook = null;            string fileExt = Path.GetExtension(strFileName);//获取文件的后缀名            using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))            {                if (fileExt == ".xls")                    hssfworkbook = new HSSFWorkbook(file);                else if (fileExt == ".xlsx")                    xssfworkbook = new XSSFWorkbook(file);//初始化太慢了，不知道这是什么bug            }            if (hssfworkbook != null)            {                HSSFSheet sheet = (HSSFSheet)hssfworkbook.GetSheetAt(sheetIndex);                if (sheet != null)                {                    System.Collections.IEnumerator rows = sheet.GetRowEnumerator();                    HSSFRow headerRow = (HSSFRow)sheet.GetRow(0);                    int cellCount = headerRow.LastCellNum;                    for (int j = 0; j < cellCount; j++)                    {                        HSSFCell cell = (HSSFCell)headerRow.GetCell(j);                        dt.Columns.Add(cell.ToString());                    }                    for (int i = (sheet.FirstRowNum + 1); i <= sheet.LastRowNum; i++)                    {                        HSSFRow row = (HSSFRow)sheet.GetRow(i);                        DataRow dataRow = dt.NewRow();                        for (int j = row.FirstCellNum; j < cellCount; j++)                        {                            if (row.GetCell(j) != null)                                dataRow[j] = row.GetCell(j).ToString();                        }                        dt.Rows.Add(dataRow);                    }                }            }            else if (xssfworkbook != null)            {                XSSFSheet xSheet = (XSSFSheet)xssfworkbook.GetSheetAt(sheetIndex);                if (xSheet != null)                {                    System.Collections.IEnumerator rows = xSheet.GetRowEnumerator();                    XSSFRow headerRow = (XSSFRow)xSheet.GetRow(0);                    int cellCount = headerRow.LastCellNum;                    for (int j = 0; j < cellCount; j++)                    {                        XSSFCell cell = (XSSFCell)headerRow.GetCell(j);                        dt.Columns.Add(cell.ToString());                    }                    for (int i = (xSheet.FirstRowNum + 1); i <= xSheet.LastRowNum; i++)                    {                        XSSFRow row = (XSSFRow)xSheet.GetRow(i);                        DataRow dataRow = dt.NewRow();                        for (int j = row.FirstCellNum; j < cellCount; j++)                        {                            if (row.GetCell(j) != null)                                dataRow[j] = row.GetCell(j).ToString();                        }                        dt.Rows.Add(dataRow);                    }                }            }            return dt;        }        #endregion        #region DataGridViewToExcel(DataGridView myDgv, string strHeaderText, string strFileName) DataGridView导出到Excel文件--C/S        /// <summary>        /// C/S Winform中DataGridView导出数据到Excel        /// </summary>        /// <param name="myDgv">DataGridView控件名称</param>        /// <param name="saveFileName">保存的文件名称，默认没有，调用的时候最好加上，中英文都支持</param>        /// <param name="isOpen">导出后是否打开文件和所在文件夹</param>        /// <param name="saveFilePath">默认保存在“我的文档”中，可自定义保存的文件夹路径</param>        /// <param name="strHeaderText">Excel中第一行的标题文字，默认没有，可以自定义</param>        /// <param name="titleNames">Excel中列名的数组，默认绑定GridView的列名</param>        public static void DataGridViewToExcel(DataGridView myDgv, string saveFileName = null, bool isOpen = false,            string saveFilePath = null, string strHeaderText = null, string[] titleNames = null)        {            using (MemoryStream ms = DataGridViewToExcel(myDgv, strHeaderText, titleNames))            {                if (string.IsNullOrEmpty(saveFileName)) //文件名为空                {                    saveFileName = DateTime.Now.Ticks.ToString();                }                if (string.IsNullOrEmpty(saveFilePath) || !System.IO.Directory.Exists(saveFilePath)) //保存路径为空或者不存在                {                    saveFilePath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); //默认在文档文件夹中                }                string saveFullPath = saveFilePath + "\\" + saveFileName + ".xls";                if (System.IO.File.Exists(saveFullPath)) //验证文件重复性                {                    saveFullPath = saveFilePath + "\\" + saveFileName +                                   DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss").Replace(":", "-").Replace(" ", "-") +                                   ".xls";                }                using (FileStream fs = new FileStream(saveFullPath, FileMode.Create, FileAccess.Write))                {                    byte[] data =http://www.mamicode.com/ ms.ToArray();                    fs.Write(data, 0, data.Length);                    fs.Flush();                }                if (isOpen)                {                    Process.Start(saveFullPath); //打开文件                    Process.Start(saveFilePath); //打开文件夹                }            }        }        #endregion        /********************************************************分割线往下方法不用与导入导出*********************************************************/        #region DataGridViewToExcel(DataGridView myDgv, string strHeaderText) DataTable导出到Excel的MemoryStream        /// <summary>        /// DataTable导出到Excel的MemoryStream        /// </summary>        /// <param name="myDgv">DataGridView控件名称</param>        /// <param name="strHeaderText">第一行标题头</param>        /// <param name="titleNames">列名称数组</param>        /// <returns>内存流</returns>        private static MemoryStream DataGridViewToExcel(DataGridView myDgv, string strHeaderText = null,            string[] titleNames = null)        {            HSSFWorkbook workbook = new HSSFWorkbook();            HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet();            #region 右击文件 属性信息            {                DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();                dsi.Company = "NPOI";                workbook.DocumentSummaryInformation = dsi;                SummaryInformation si = PropertySetFactory.CreateSummaryInformation();                si.Author = "文件作者信息"; //填加xls文件作者信息                si.ApplicationName = "创建程序信息"; //填加xls文件创建程序信息                si.LastAuthor = "最后保存者信息"; //填加xls文件最后保存者信息                si.Comments = "作者信息"; //填加xls文件作者信息                si.Title = "标题信息"; //填加xls文件标题信息                si.Subject = "主题信息"; //填加文件主题信息                si.CreateDateTime = System.DateTime.Now;                workbook.SummaryInformation = si;            }            #endregion            HSSFCellStyle dateStyle = (HSSFCellStyle)workbook.CreateCellStyle();            HSSFDataFormat format = (HSSFDataFormat)workbook.CreateDataFormat();            dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");            //取得列宽            int[] arrColWidth = new int[myDgv.Columns.Count];            foreach (DataGridViewColumn item in myDgv.Columns)            {                arrColWidth[item.Index] = Encoding.GetEncoding(936).GetBytes(item.HeaderText).Length;            }            for (int i = 0; i < myDgv.Rows.Count; i++)            {                for (int j = 0; j < myDgv.Columns.Count; j++)                {                    int intTemp = Encoding.GetEncoding(936).GetBytes(myDgv.Rows[i].Cells[j].ToString()).Length;                    if (intTemp > arrColWidth[j])                    {                        arrColWidth[j] = intTemp;                    }                }            }            int rowIndex = 0;            foreach (DataGridViewRow row in myDgv.Rows)            {                #region 新建表，填充表头，填充列头，样式                if (rowIndex == 65535 || rowIndex == 0)                {                    if (rowIndex != 0)                    {                        sheet = (HSSFSheet)workbook.CreateSheet();                    }                    #region 表头及样式                    {                        if (!string.IsNullOrEmpty(strHeaderText))                        {                            HSSFRow headerRow = (HSSFRow)sheet.CreateRow(0);                            headerRow.HeightInPoints = 25;                            headerRow.CreateCell(0).SetCellValue(strHeaderText);                            HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle();                            //  headStyle.Alignment = CellHorizontalAlignment.CENTER;                            HSSFFont font = (HSSFFont)workbook.CreateFont();                            font.FontHeightInPoints = 20;                            font.Boldweight = 700;                            font.FontName = "宋体";                            headStyle.SetFont(font);                            headerRow.GetCell(0).CellStyle = headStyle;                            // sheet.AddMergedRegion(new Region(0, 0, 0, dtSource.Columns.Count - 1));                            //headerRow.Dispose();                            rowIndex++;                        }                    }                    #endregion                    #region 列头及样式                    {                        HSSFRow headerRow = (HSSFRow)sheet.CreateRow(rowIndex);                        HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle();                        // headStyle.Alignment = CellHorizontalAlignment.CENTER;                        HSSFFont font = (HSSFFont)workbook.CreateFont();                        font.FontHeightInPoints = 14;                        font.Boldweight = 500;                        font.FontName = "宋体";                        headStyle.SetFont(font);                        if (titleNames != null)                        {                            if (titleNames.Length > 0)                            {                                for (int i = 0; i < titleNames.Length; i++)                                {                                    headerRow.CreateCell(i).SetCellValue(titleNames[i]);                                    headerRow.GetCell(i).CellStyle = headStyle;                                    //设置列宽                                    sheet.SetColumnWidth(i, (arrColWidth[i] + 1) * 100);                                }                            }                        }                        else                        {                            foreach (DataGridViewColumn column in myDgv.Columns)                            {                                headerRow.CreateCell(column.Index).SetCellValue(column.HeaderText);                                headerRow.GetCell(column.Index).CellStyle = headStyle;                                //设置列宽                                sheet.SetColumnWidth(column.Index, (arrColWidth[column.Index] + 1) * 100);                            }                        }                        rowIndex++;                        // headerRow.Dispose();                    }                    #endregion                }                #endregion                #region 填充内容                HSSFRow dataRow = (HSSFRow)sheet.CreateRow(rowIndex);                if (row.Index > 0)                {                    foreach (DataGridViewColumn column in myDgv.Columns)                    {                        HSSFCell newCell = (HSSFCell)dataRow.CreateCell(column.Index);                        string drValue = http://www.mamicode.com/myDgv[column.Index, row.Index - 1].Value.ToString();                        switch (column.ValueType.ToString())                        {                            case "System.String": //字符串类型                                newCell.SetCellValue(drValue);                                break;                            case "System.DateTime": //日期类型                                System.DateTime dateV;                                System.DateTime.TryParse(drValue, out dateV);                                newCell.SetCellValue(dateV);                                newCell.CellStyle = dateStyle; //格式化显示                                break;                            case "System.Boolean": //布尔型                                bool boolV = false;                                bool.TryParse(drValue, out boolV);                                newCell.SetCellValue(boolV);                                break;                            case "System.Int16": //整型                            case "System.Int32":                            case "System.Int64":                            case "System.Byte":                                int intV = 0;                                int.TryParse(drValue, out intV);                                newCell.SetCellValue(intV);                                break;                            case "System.Decimal": //浮点型                            case "System.Double":                                double doubV = 0;                                double.TryParse(drValue, out doubV);                                newCell.SetCellValue(doubV);                                break;                            case "System.DBNull": //空值处理                                newCell.SetCellValue("");                                break;                            default:                                newCell.SetCellValue("");                                break;                        }                    }                }                else                {                    rowIndex--;                }                #endregion                rowIndex++;            }            using (MemoryStream ms = new MemoryStream())            {                workbook.Write(ms);                ms.Flush();                ms.Position = 0;                //    sheet.Dispose();                //workbook.Dispose();//一般只用写这一个就OK了，他会遍历并释放所有资源，但当前版本有问题所以只释放sheet                return ms;            }        }        #endregion        #region GetExcelStream() 工作簿中的数据流写入到根目录        /// <summary>        /// 写入到内存流中        /// </summary>        /// <returns></returns>        private static MemoryStream GetExcelStream()        {            //Write the stream data of workbook to the root directory--工作簿中的数据流写入到根目录            MemoryStream file = new MemoryStream();            _hssfworkbook.Write(file);            return file;        }        #endregion        #region GenerateData(DataTable sourceDt, string[] titleNames, string strHeadName, string sheetName = "Sheet1") 构建数据集，每一个Sheet表        /// <summary>        /// 构建数据集，每一个Sheet表        /// </summary>        /// <param name="sourceDt">数据源</param>        /// <param name="titleNames">列名</param>        /// <param name="strHeadName">第一行显示标题</param>        /// <param name="sheetName">需要创建的表的名称，默认是Sheet1</param>        /// <param name="isOpen">是否打开文件</param>        private static void GenerateData(DataTable sourceDt, string[] titleNames, string strHeadName,            string sheetName = "Sheet1")        {            ISheet sheet1 = _hssfworkbook.CreateSheet(sheetName);            int rowIndex = 0;            if (!string.IsNullOrEmpty(strHeadName)) //头部大标题            {                sheet1.CreateRow(rowIndex).CreateCell(0).SetCellValue(strHeadName);                rowIndex++;            }            IRow rowSecond = sheet1.CreateRow(rowIndex);            if (titleNames != null) //构建自定义列标题            {                if (titleNames.Length > 0)                {                    for (int k = 0; k < titleNames.Length; k++)                    {                        var cell = rowSecond.CreateCell(k);                        cell.SetCellValue(titleNames[k]);                        cell.CellStyle = Getcellstyle(_hssfworkbook, stylexls.头);                    }                    rowIndex++;                }            }            else //构建DataTable的列标题            {                if (sourceDt.Columns.Count > 0)                {                    for (int i = 0; i < sourceDt.Columns.Count; i++)                    {                        var cell = rowSecond.CreateCell(i);                        cell.SetCellValue(sourceDt.Columns[i].ColumnName);                        cell.CellStyle = Getcellstyle(_hssfworkbook, stylexls.头);                    }                    rowIndex++;                }            }            if (sourceDt != null && sourceDt.Rows.Count > 0)            {                for (int i = 0; i < sourceDt.Rows.Count; i++)                {                    IRow row = sheet1.CreateRow(rowIndex++);                    for (int j = 0; j < sourceDt.Columns.Count; j++)                    {                        row.CreateCell(j).SetCellValue(sourceDt.Rows[i][j].ToString());                    }                }            }        }        #endregion        #region InitializeWorkbook() 导出文件的属性详细信息        /// <summary>        /// 导出文件的属性详细信息        /// </summary>        private static void InitializeWorkbook()        {            _hssfworkbook = new HSSFWorkbook();            #region 右击文件 属性信息            {                DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();                dsi.Company = "DZD";                _hssfworkbook.DocumentSummaryInformation = dsi;                SummaryInformation si = PropertySetFactory.CreateSummaryInformation();                si.Author = "文件作者信息"; //填加xls文件作者信息                si.ApplicationName = "创建程序信息"; //填加xls文件创建程序信息                si.LastAuthor = "最后保存者信息"; //填加xls文件最后保存者信息                si.Comments = "作者信息"; //填加xls文件作者信息                si.Title = "标题信息"; //填加xls文件标题信息                si.Subject = "主题信息"; //填加文件主题信息                si.CreateDateTime = DateTime.Now;                _hssfworkbook.SummaryInformation = si;            }            #endregion        }        #endregion        #region 定义单元格常用到样式        private static ICellStyle Getcellstyle(IWorkbook wb, stylexls str)        {            ICellStyle cellStyle = wb.CreateCellStyle();            //定义几种字体              //也可以一种字体，写一些公共属性，然后在下面需要时加特殊的              IFont font12 = wb.CreateFont();            font12.FontHeightInPoints = 14;            font12.FontName = "宋体";            IFont font = wb.CreateFont();            font.FontName = "宋体";            //font.Underline = 1;下划线              IFont fontcolorblue = wb.CreateFont();            fontcolorblue.Color = HSSFColor.OLIVE_GREEN.BLUE.index;            fontcolorblue.IsItalic = true; //下划线              fontcolorblue.FontName = "宋体";            //边框              cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.DOTTED;            cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.HAIR;            cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.HAIR;            cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.DOTTED;            //边框颜色              cellStyle.BottomBorderColor = HSSFColor.OLIVE_GREEN.BLUE.index;            cellStyle.TopBorderColor = HSSFColor.OLIVE_GREEN.BLUE.index;            //背景图形，我没有用到过。感觉很丑              //   cellStyle.FillBackgroundColor = HSSFColor.OLIVE_GREEN.GREEN.index;            //cellStyle.FillForegroundColor = HSSFColor.OLIVE_GREEN.BLUE.index;              // cellStyle.FillForegroundColor = HSSFColor.WHITE.index;            // cellStyle.FillPattern = FillPatternType.NO_FILL;              cellStyle.FillBackgroundColor = HSSFColor.MAROON.index;            //水平对齐              cellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.LEFT;            //垂直对齐              cellStyle.VerticalAlignment = VerticalAlignment.CENTER;            //自动换行              // cellStyle.WrapText = true;            //缩进;当设置为1时，前面留的空白太大了。希旺官网改进。或者是我设置的不对              cellStyle.Indention = 0;            //上面基本都是设共公的设置              //下面列出了常用的字段类型              switch (str)            {                case stylexls.头:                    // cellStyle.FillPattern = FillPatternType.LEAST_DOTS;                      cellStyle.SetFont(font12);                    break;                case stylexls.时间:                    IDataFormat datastyle = wb.CreateDataFormat();                    cellStyle.DataFormat = datastyle.GetFormat("yyyy/mm/dd");                    cellStyle.SetFont(font);                    break;                case stylexls.数字:                    cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00");                    cellStyle.SetFont(font);                    break;                case stylexls.钱:                    IDataFormat format = wb.CreateDataFormat();                    cellStyle.DataFormat = format.GetFormat("￥#,##0");                    cellStyle.SetFont(font);                    break;                case stylexls.url:                    fontcolorblue.Underline = 1;                    cellStyle.SetFont(fontcolorblue);                    break;                case stylexls.百分比:                    cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00%");                    cellStyle.SetFont(font);                    break;                case stylexls.中文大写:                    IDataFormat format1 = wb.CreateDataFormat();                    cellStyle.DataFormat = format1.GetFormat("[DbNum2][$-804]0");                    cellStyle.SetFont(font);                    break;                case stylexls.科学计数法:                    cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00E+00");                    cellStyle.SetFont(font);                    break;                case stylexls.默认:                    cellStyle.SetFont(font);                    break;            }            return cellStyle;        }        #endregion        #region 定义单元格常用到样式的枚举        public enum stylexls        {            头,            url,            时间,            数字,            钱,            百分比,            中文大写,            科学计数法,            默认        }        #endregion    }}