http://blog.csdn.net/zouyujie1127/article/details/12002177
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");
- }
- 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
- }