asp.NET导出Gridview到excel 带模板列显示

界面内容如下：

导出后显示查询到的数据如下：

c#调用代码如下：

 protected void btnOutput_Click(object sender, EventArgs e){gvEquData.AllowPaging = false;BindGridViewData();ExcelHelper helper = new ExcelHelper();helper.ExportExcel(gvEquData, "设备状态信息列表"+DateTime.Now.ToString("yyyyMMddHHmmss")+".xls", "设备状态信息列表");}

这里我使用了NPOI这个dll来操作excel，这个dll需要去网上下载。然后新建一个类用来操作excel，如下：

public class ExcelHelper
{#region  NPOI Excel导出/// <summary>/// 导出Excel /// </summary>/// <param name="GV">控件名称(GridView) 如有需要稍加修改可应用于DateGird等.Net数据控件</param>/// <param name="ExcleName">保存的Excel名字</param>/// <param name="SheetName">工作簿名字</param>/// <param name="cols">图片列 如果没有图片列 该参数可赋 NULL </param>public void ExportExcel(GridView GV, string ExcleName, string SheetName){HSSFWorkbook hssfworkbook = new HSSFWorkbook();InitializeWorkbook(hssfworkbook, "雄帝", " Export  Excel ");HSSFSheet sheet1 = (HSSFSheet)hssfworkbook.CreateSheet(SheetName);HSSFPatriarch patriarch = (HSSFPatriarch)sheet1.CreateDrawingPatriarch();//插入图片所用HSSFRow row;HSSFCell cell;//合并单元格信息int startRow = 0;int startColumn = 0;int span = 0;int col = 0;//当前的格数int rownum = 0;row = (HSSFRow)sheet1.CreateRow(0);//添加Excel标题for (int K = 0; K < GV.HeaderRow.Cells.Count; K++)//GV.Columns.Count{cell = (HSSFCell)row.CreateCell(K);if (GV.HeaderRow.Cells[K].HasControls()){ControlCollection cc=GV.HeaderRow.Cells[K].Controls;if (cc.Count < 2){if (cc[0] is Literal){Literal ltl = cc[0] as Literal;cell.SetCellValue(ltl.Text);}else{cell.SetCellValue(GV.Columns[K].HeaderText);}}else{if (cc[1] is Literal){Literal ltl = cc[1] as Literal;cell.SetCellValue(ltl.Text);}else{cell.SetCellValue(GV.Columns[K].HeaderText);}}}else{cell.SetCellValue(GV.Columns[K].HeaderText);//}//cell.SetCellValue(getCellText(GV.HeaderRow.Cells[K]));//}//加载数据for (int i = 0; i < GV.Rows.Count; i++)//{row = (HSSFRow)sheet1.CreateRow(i + 1);rownum = i + 1;for (int j = 0; j < GV.HeaderRow.Cells.Count; j++)//GV.Columns.Count{if (GV.HeaderRow.Cells[j].Controls.Count>1){cell = (HSSFCell)row.CreateCell(j);if (GV.HeaderRow.Cells[j].Controls[0] is CheckBox){CheckBox cbx = GV.HeaderRow.Cells[j].Controls[0] as CheckBox;if (cbx.Checked){cell.SetCellValue("是");}else{cell.SetCellValue("否");}}}else{TableCell Usecell = GV.Rows[i].Cells[j];if (Usecell.RowSpan != 0 || Usecell.ColumnSpan != 0)//当含有和并列(行)的时候记录该合并数据{startRow = i + 1;//起始行startColumn = j;//起始列span = Usecell.RowSpan;//合并的行数col = Usecell.ColumnSpan;//合并的列数}cell = (HSSFCell)row.CreateCell(j);//当处于合并状时忽略该格式内容if (i + 1 > startRow && j > startColumn && (startRow + span) > i + 1 && (startColumn + col) > j){}else if (i + 1 == startRow && j == startColumn){//进行单元格的合并int row2 = (span == 0) ? 0 : (span - 1);int col2 = (col == 0) ? 0 : (col - 1);sheet1.AddMergedRegion(new Region(i + 1, j, i + row2 + 1, j + col2));cell.SetCellValue(getCellText(GV.Rows[i].Cells[j]));}else{cell.SetCellValue(getCellText(GV.Rows[i].Cells[j]));}}}}//加载Footer部分数据row = (HSSFRow)sheet1.CreateRow(rownum + 1);int footerAt = 0;int footSpan = 0;if (GV.FooterRow != null){for (int footNum = 0; footNum < GV.FooterRow.Cells.Count; footNum++){TableCell footTc = GV.FooterRow.Cells[footNum];if (footTc.ColumnSpan != 0){footSpan = footTc.ColumnSpan;footerAt = footNum;}cell = (HSSFCell)row.CreateCell(footNum);if (footNum > footerAt && footNum < footSpan + footerAt){}else if (footNum == footerAt)//合并单元格{int footercol2 = (footSpan == 0) ? 0 : (footSpan - 1);sheet1.AddMergedRegion(new Region(rownum + 1, footerAt, rownum + 1, footerAt + footercol2));cell.SetCellValue(getCellText(GV.FooterRow.Cells[footNum]));}else{cell.SetCellValue(getCellText(footTc));}}}string path = ExcleName;ExportToExcel(hssfworkbook, ExcleName);}/// <summary>/// 导出Excel/// </summary>/// <param name="Dt">数据源</param>/// <param name="ExcleName">导入文件名称</param>/// <param name="SheetName">工作薄名称</param>/// <param name="titleArr">标题栏</param>/// <param name="clumnArr">栏位名</param>public void ExportExcel(DataTable Dt, string ExcleName, string SheetName, string[] titleArr, string[] clumnArr){HSSFWorkbook hssfworkbook = new HSSFWorkbook();InitializeWorkbook(hssfworkbook, "雄帝", " Export  Excel ");HSSFSheet excelSheet = (HSSFSheet)hssfworkbook.CreateSheet(SheetName);int rowCount = 0;HSSFRow newRow = (HSSFRow)excelSheet.CreateRow(0);rowCount++;//循环写出列头         for (int i = 0; i < titleArr.Length; i++){HSSFCell newCell = (HSSFCell)newRow.CreateCell(i);newCell.SetCellValue(titleArr[i]);}for (int i = 0; i < Dt.Rows.Count; i++){rowCount++;HSSFRow newRowData = (HSSFRow)excelSheet.CreateRow(rowCount);DataRow dr = Dt.Rows[i];for (int j = 0; j < clumnArr.Length; j++){HSSFCell newCell = (HSSFCell)newRow.CreateCell(rowCount);newCell.SetCellValue(dr[titleArr[j]].ToString());}}string path = ExcleName;ExportToExcel(hssfworkbook, ExcleName);}//获取图片路径string getCellText(TableCell tc){string result = HttpUtility.HtmlDecode(tc.Text);//HttpUtility.HtmlDecode(str);foreach (Control child in tc.Controls){if (child is Label){result = HttpUtility.HtmlDecode(((Label)child).Text);result = result.Trim();break;}}string textLast = result.Trim();return textLast;}/// <summary>/// 对产生的Excel进行文本输入/// </summary>/// <param name="Path">输出路径</param>public void WriteToFile(string Path){Write the stream data of workbook to the root directory//FileStream file = new FileStream(Path, FileMode.Create);//hssfworkbook.Write(file);//file.Close();}/// <summary>/// 填写Excel文本属性  如有需要可以进行函数扩展 添加更多的属性值/// </summary>/// <param name="CompanyName">公司名称</param>/// <param name="Subject">文档主题</param>public void InitializeWorkbook(HSSFWorkbook hssfworkbook, string CompanyName, string Subject){//hssfworkbook = new HSSFWorkbook();//create a entry of DocumentSummaryInformationDocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();dsi.Company = CompanyName;hssfworkbook.DocumentSummaryInformation = dsi;//create a entry of SummaryInformationSummaryInformation si = PropertySetFactory.CreateSummaryInformation();si.Subject = Subject;hssfworkbook.SummaryInformation = si;}MemoryStream WriteToStream(HSSFWorkbook hssfworkbook){//Write the stream data of workbook to the root directoryMemoryStream file = new MemoryStream();hssfworkbook.Write(file);return file;}public void ExportToExcel(HSSFWorkbook hssfworkbook, string filePath){#region  //以字符流的形式下载文件//FileStream fs = new FileStream(Apppath + filePath, FileMode.Open);//byte[] bytes = new byte[(int)fs.Length];//fs.Read(bytes, 0, bytes.Length);//fs.Close();#endregionHttpContext.Current.Response.ContentType = "application/vnd.ms-excel";HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" +
HttpUtility.UrlEncode(filePath, System.Text.Encoding.UTF8));HttpContext.Current.Response.Clear();//HttpContext.Current.Response.BinaryWrite(bytes);HttpContext.Current.Response.BinaryWrite(WriteToStream(hssfworkbook).GetBuffer());HttpContext.Current.Response.Flush();//HttpContext.Current.Response.End();//HttpContext.Current.Response.IsClientConnected}#endregion
}

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