网上提供了很多Asp.net中操作Excel的方法,其中大部分是调用微软的Office组件,下面提供三个无须安装Office即可从Asp.net输出Excel的方法。
1 简单方法
//下面代码输出的Excel有三列(姓名、年龄、性别) //列之间用\t隔开 StringWriter sw = new StringWriter(); sw.WriteLine("姓名\t年龄\t性别"); //Excel表格的列标题 sw.WriteLine("张三\t29\t男"); //行数据 sw.WriteLine("李四\t35\t男"); sw.WriteLine("王五\t20\t女"); /*如果从数据库返回的数据 DataTable dt; //假设dt已经有数据,数据格式name、age、sex foreach(DataRow row in dt.Rows) { sw.WriteLine(string.Format("{0}\t{1}\t{2}", row["name"], row["age"], row["sex"])); } */ //asp.net输出的Excel文件名 //如果文件名是中文的话,需要进行编码转换,否则浏览器看到的下载文件是乱码。 string fileName = HttpUtility.UrlEncode("Excel.xls");; Response.Buffer = true; Response.Clear(); //asp.net返回的数据类型,这里设置download。 //浏览器会把返回的数据当成文件下载来处理。 Response.ContentType = "application/download"; //设置返回数据的编码,如果不设置该项,Excel的中文是乱码。 Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312"); Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName + ";"); Response.Write(sw); //把数据写入输出流。 Response.Flush(); Response.Close();
2 NPOI导出Excel 2003
NPOI是一个开源库,支持各种Excel操作,不过只能操作97~2003版的Excel,不兼容Excel 2007。
NPOI的下载地址是http://npoi.codeplex.com/,目前最新版本是1.2.5。
//引入NPOI库 using NPOI.HSSF.UserModel; using NPOI.HPSF; using NPOI.SS.UserModel; ////////////////////////////////////////////////////////////////////////////////////// HSSFWorkbook hssfworkbook = new HSSFWorkbook(); //Excel文件的摘要信息 DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation(); dsi.Company = "blog.csdn.net"; hssfworkbook.DocumentSummaryInformation = dsi; SummaryInformation si = PropertySetFactory.CreateSummaryInformation(); si.Subject = "Export Excel"; hssfworkbook.SummaryInformation = si; //下面代码输出的Excel有三列(姓名、年龄、性别) ISheet sheet1 = hssfworkbook.CreateSheet("Sheet1"); IRow row0 = sheet1.CreateRow(0); row0.CreateCell(0).SetCellValue("姓名"); row0.CreateCell(1).SetCellValue("年龄"); row0.CreateCell(2).SetCellValue("性别"); IRow row1 = sheet1.CreateRow(1); row1.CreateCell(0).SetCellValue("张三"); row1.CreateCell(1).SetCellValue(29); row1.CreateCell(2).SetCellValue("男"); IRow row2 = sheet1.CreateRow(2); row2.CreateCell(0).SetCellValue("李四"); row2.CreateCell(1).SetCellValue(35); row2.CreateCell(2).SetCellValue("男"); IRow row3 = sheet1.CreateRow(3); row3.CreateCell(0).SetCellValue("王五"); row3.CreateCell(1).SetCellValue(20); row3.CreateCell(2).SetCellValue("女"); /*如果从数据库获取的数据 DataTable dt = null; //假设dt已经有数据,数据格式name、age、sex for (int i = 0; i < dt.Rows.Count; i++) { //DataTable中的行和Excel中的行对应 DataRow row = dt.Rows[i]; IRow excelRow = sheet1.CreateRow(i); excelRow.CreateCell(0).SetCellValue(row["name"].ToString()); excelRow.CreateCell(1).SetCellValue(row["age"].ToString()); excelRow.CreateCell(2).SetCellValue(row["sex"].ToString()); //DataTable中的Column和Excel中的Cell对应 //也可以对DataTable中的列进行循环获取字段值 for (int j = 0; j < dt.Columns.Count; j++) { string value = dt.Rows[i][j].ToString(); excelRow.CreateCell(j).SetCellValue(value); } } */ MemoryStream ms = new MemoryStream(); hssfworkbook.Write(ms); //asp.net输出的Excel文件名 //如果文件名是中文的话,需要进行编码转换,否则浏览器看到的下载文件是乱码。 string fileName = HttpUtility.UrlEncode("Excel.xls"); Response.ContentType = "application/vnd.ms-excel"; //Response.ContentType = "application/download"; //也可以设置成download Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", fileName)); Response.Buffer = true; Response.Clear(); Response.BinaryWrite(ms.GetBuffer()); Response.End();
3 EPPlus库生成Excel 2007
EPPlus支持Excel 2007,下载地址http://epplus.codeplex.com/。
//引入EPPlus的命名空间 //using OfficeOpenXml; ExcelPackage excel = new ExcelPackage(); ExcelWorksheet sheet = excel.Workbook.Worksheets.Add("sheet1"); sheet.Cells["A1"].Value = "姓名"; sheet.Cells["B1"].Value = "年龄"; sheet.Cells["C1"].Value = "性别"; sheet.Cells["A2"].Value = "张三"; sheet.Cells["B2"].Value = 29; sheet.Cells["C2"].Value = "男"; sheet.Cells["A3"].Value = "李四"; sheet.Cells["B3"].Value = 35; sheet.Cells["C3"].Value = "男"; sheet.Cells["A4"].Value = "王五"; sheet.Cells["B4"].Value = 20; sheet.Cells["C4"].Value = "女"; /* //也可以用2维数组 //数组的索引从1开始 sheet.Cells[1, 1].Value = "姓名"; sheet.Cells[1, 2].Value = "年龄"; sheet.Cells[1, 3].Value = "性别"; sheet.Cells[2, 1].Value = "张三"; sheet.Cells[2, 2].Value = 29; sheet.Cells[2, 3].Value = "男"; sheet.Cells[3, 1].Value = "李四"; sheet.Cells[3, 2].Value = 35; sheet.Cells[3, 3].Value = "男"; sheet.Cells[4, 1].Value = "王五"; sheet.Cells[4, 2].Value = 20; sheet.Cells[4, 3].Value = "女"; */ MemoryStream ms = new MemoryStream(); excel.SaveAs(ms); //asp.net输出的Excel文件名 //如果文件名是中文的话,需要进行编码转换,否则浏览器看到的下载文件是乱码。 string fileName = HttpUtility.UrlEncode("Excel.xlsx"); Response.ContentType = "application/vnd.ms-excel"; //Response.ContentType = "application/download"; //也可以设置成download Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", fileName)); Response.Buffer = true; Response.Clear(); Response.BinaryWrite(ms.GetBuffer()); Response.End();