.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 DocumentSummaryInformation  
        DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();  
        dsi.Company = CompanyName;  
        hssfworkbook.DocumentSummaryInformation = dsi;  
  
        //create a entry of SummaryInformation  
        SummaryInformation si = PropertySetFactory.CreateSummaryInformation();  
        si.Subject = Subject;  
        hssfworkbook.SummaryInformation = si;  
    }  
  
    MemoryStream WriteToStream(HSSFWorkbook hssfworkbook)  
    {  
        //Write the stream data of workbook to the root directory  
        MemoryStream 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();  
        #endregion  
  
        HttpContext.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  
}