导出excel

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asp.net里导出excel表方法汇总

1、由dataset生成

public void CreateExcel(DataSet ds,string typeid,string FileName) { HttpResponse resp; resp = Page.Response; resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312"); resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName); string colHeaders= "", ls_item=""; int i=0; //定义表对象与行对像，同时用DataSet对其值进行初始化 DataTable dt=ds.Tables[0]; DataRow[] myRow=dt.Select(""); // typeid=="1"时导出为EXCEL格式文件；typeid=="2"时导出为XML格式文件 if(typeid=="1") { //取得数据表各列标题，各标题之间以/t分割，最后一个列标题后加回车符 for(i=0;i colHeaders+=dt.Columns[i].Caption.ToString()+"/t"; colHeaders +=dt.Columns[i].Caption.ToString() +"/n"; //向HTTP输出流中写入取得的数据信息 resp.Write(colHeaders); //逐行处理数据 foreach(DataRow row in myRow) { //在当前行中，逐列获得数据，数据之间以/t分割，结束时加回车符/n for(i=0;i ls_item +=row[i].ToString() + "/t"; ls_item += row[i].ToString() +"/n"; //当前行数据写入HTTP输出流，并且置空ls_item以便下行数据 resp.Write(ls_item); ls_item=""; } } else { if(typeid=="2") { //从DataSet中直接导出XML数据并且写到HTTP输出流中 resp.Write(ds.GetXml()); } } //写缓冲区中的数据到HTTP头文件中 resp.End(); }

2、使用微软的C＋＋写的ACTIVEX控件：http://download.microsoft.com/download/OfficeXPDev/sample/1.0/WIN98MeXP/EN-US/Dsoframerctl.exe

3、由datagrid生成：

public void ToExcel(System.Web.UI.Control ctl) { HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename=Excel.xls"); HttpContext.Current.Response.Charset ="UTF-8"; HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default; HttpContext.Current.Response.ContentType ="application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword ctl.Page.EnableViewState =false; System.IO.StringWriter tw = new System.IO.StringWriter() ; System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter (tw); ctl.RenderControl(hw); HttpContext.Current.Response.Write(tw.ToString()); HttpContext.Current.Response.End(); }

用法：ToExcel(datagrid1);

4、这个用dataview ，代码好长

public void OutputExcel(DataView dv,string str) { // // TODO: 在此处添加构造函数逻辑 // //dv为要输出到Excel的数据，str为标题名称 GC.Collect(); Application excel;// = new Application(); int rowIndex=4; int colIndex=1; _Workbook xBk; _Worksheet xSt; excel= new ApplicationClass(); xBk = excel.Workbooks.Add(true); xSt = (_Worksheet)xBk.ActiveSheet; // //取得标题 // foreach(DataColumn col in dv.Table.Columns) { colIndex++; excel.Cells[4,colIndex] = col.ColumnName; xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[4,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置标题格式为居中对齐 } // //取得表格中的数据 // foreach(DataRowView row in dv) { rowIndex ++; colIndex = 1; foreach(DataColumn col in dv.Table.Columns) { colIndex ++; if(col.DataType == System.Type.GetType("System.DateTime")) { excel.Cells[rowIndex,colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd"); xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置日期型的字段格式为居中对齐 } else if(col.DataType == System.Type.GetType("System.String")) { excel.Cells[rowIndex,colIndex] = "''"+row[col.ColumnName].ToString(); xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置字符型的字段格式为居中对齐 } else { excel.Cells[rowIndex,colIndex] = row[col.ColumnName].ToString(); } } } // //加载一个合计行 // int rowSum = rowIndex + 1; int colSum = 2; excel.Cells[rowSum,2] = "合计"; xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,2]).HorizontalAlignment = XlHAlign.xlHAlignCenter; // //设置选中的部分的颜色 // xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Select(); xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Interior.ColorIndex = 19;//设置为浅黄色，共计有56种 // //取得整个报表的标题 // excel.Cells[2,2] = str; // //设置整个报表的标题格式 // xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Bold = true; xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Size = 22; // //设置报表表格为最适应宽度 // xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Select(); xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Columns.AutoFit(); // //设置整个报表的标题为跨列居中 // xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).Select(); xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).HorizontalAlignment = XlHAlign.xlHAlignCenterAcrossSelection; // //绘制边框 // xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Borders.LineStyle = 1; xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,2]).Borders[XlBordersIndex.xlEdgeLeft].Weight = XlBorderWeight.xlThick;//设置左边线加粗 xSt.get_Range(excel.Cells[4,2],excel.Cells[4,colIndex]).Borders[XlBordersIndex.xlEdgeTop].Weight = XlBorderWeight.xlThick;//设置上边线加粗 xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeRight].Weight = XlBorderWeight.xlThick;//设置右边线加粗 xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeBottom].Weight = XlBorderWeight.xlThick;//设置下边线加粗 // //显示效果 // excel.Visible=true; //xSt.Export(Server.MapPath(".")+"//"+this.xlfile.Text+".xls",SheetExportActionEnum.ssExportActionNone,Microsoft.Office.Interop.OWC.SheetExportFormat.ssExportHTML); xBk.SaveCopyAs(Server.MapPath(".")+"//"+this.xlfile.Text+".xls"); ds = null; xBk.Close(false, null,null); excel.Quit(); System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk); System.Runtime.InteropServices.Marshal.ReleaseComObject(excel); System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt); xBk = null; excel = null; xSt = null; GC.Collect(); string path = Server.MapPath(this.xlfile.Text+".xls"); System.IO.FileInfo file = new System.IO.FileInfo(path); Response.Clear(); Response.Charset="GB2312"; Response.ContentEncoding=System.Text.Encoding.UTF8; // 添加头信息，为"文件下载/另存为"对话框指定默认文件名 Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name)); // 添加头信息，指定文件大小，让浏览器能够显示下载进度 Response.AddHeader("Content-Length", file.Length.ToString()); // 指定返回的是一个不能被客户端读取的流，必须被下载 Response.ContentType = "application/ms-excel"; // 把文件流发送到客户端 Response.WriteFile(file.FullName); // 停止页面的执行 Response.End(); }

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SqlConnection conn=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["conn"]);
   SqlDataAdapter da=new SqlDataAdapter("select * from tb1",conn);
   DataSet ds=new DataSet();
   da.Fill(ds,"table1");
   DataTable dt=ds.Tables["table1"];
   StringWriter sw=new StringWriter();
   sw.WriteLine("自动编号,姓名,年龄");
   foreach(DataRow dr in dt.Rows)
   {
    sw.WriteLine(dr["ID"]+","+dr["vName"]+","+dr["iAge"]);
   }
   sw.Close();
   Response.AddHeader("Content-Disposition", "attachment; filename=test.csv");
   Response.ContentType = "application/ms-excel";
   Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
   Response.Write(sw);
   Response.End();

对方法一，二补充一点，如果你希望导出的是xls文件分隔符用＼t就能了，不要用逗号

代码修改如下：
sw.WriteLine("自动编号＼t姓名＼t年龄");
   foreach(DataRow dr in dt.Rows)
   {
    sw.WriteLine(dr["ID"]+"＼t"+dr["vName"]+"＼t"+dr["iAge"]);
   }
另外，修改输出的文件扩展名为xls即可。

---------------------------------项目实践--yx---

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HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=Excel.xls"); HttpContext.Current.Response.Charset = "UTF-8"; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default; HttpContext.Current.Response.ContentType = "application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword this.gvList.Page.EnableViewState = false; System.IO.StringWriter tw = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw); this.gvList.RenderControl(hw); HttpContext.Current.Response.Write(tw.ToString()); HttpContext.Current.Response.End();