C#、javaScript 导出Excel的几种方法！

第一种：将页面的Table导出Excel（javaScript）

    //导出Excel    function excelPrint() {        var date = new Date();        var filename = document.title + '-' + date.toLocaleDateString().toString() + '.xls';        var tempStr = document.getElementById('strtable').outerHTML;        var newWin = window.open();        newWin.document.write(tempStr);        newWin.document.close();        newWin.document.execCommand('saveas', true, filename);        newWin.window.close();    }

 

第二种：将DataGrid或GridView导出Excel

        //导出Excel        public void ToExcel(DataGrid dg)        {            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + this.Title + "-" + DateTime.Now.ToShortDateString() + ".xls");  //文件名            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             dg.Page.EnableViewState = false;  //是否导出全部            System.IO.StringWriter tw = new System.IO.StringWriter();            System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);            dg.RenderControl(hw);            HttpContext.Current.Response.Write(tw.ToString());            HttpContext.Current.Response.End();        }

 

第三种：拼语句，对某个工作表一行一行地写进去

 

        //导出Excel        public void ExportExcle()        {            Aspose.Excel.Excel xlDoc = new Aspose.Excel.Excel();  //需要引用Aspose.Excel.dll，在我的资源有得下载
  
            string filename = "业务数据报表" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";//文件名 + DateTime.Now.ToString("yyyyMMddHHmmss")            string filepath = HttpContext.Current.Server.MapPath(Request.ApplicationPath) + @"\DownloadFile\" + filename;//放置文件地              try            {                string fileTem = HttpContext.Current.Server.MapPath(Request.ApplicationPath) + @"\ExcelTemplate\流程业务数据模板.xls";                xlDoc.Open(fileTem);    //打开模板                   Aspose.Excel.Worksheet xSt;                System.Data.DataTable dt = null;                string AppId = "";                for (int i = 1; i <= 10; i++)                {                    switch (i)                    {                        case 1: AppId = "202"; break;                        case 2: AppId = "203"; break;                        case 3: AppId = "204"; break;                        case 4: AppId = "206"; break;                        case 5: AppId = "209"; break;                        case 6: AppId = "210"; break;                        case 7: AppId = "211"; break;                        case 8: AppId = "212"; break;                        case 9: AppId = "213"; break;                        case 10: AppId = "214"; break;                    }                    xSt = xlDoc.Worksheets[i - 1];                    //去读取数据放入xSt                     dt = FlowDP.GetBusinessData_WorkOrderQuery(AppId); //根据不同的条件返回DataTable                    if (dt != null)                    {                        int iColumnCnt = dt.Columns.Count;                        int iRowCnt = dt.Rows.Count;                        for (int m = 0; m < iRowCnt; m++)                        {                            for (int n = 0; n < iColumnCnt; n++)                            {                                xSt.Cells[m + 1, Convert.ToByte(n)].PutValue(dt.Rows[m][n].ToString());  //把数据写到Excel                            }                        }                    }                    else                    {                        xSt = null;                    }                }                //保存文件                xlDoc.Save(filepath, Aspose.Excel.FileFormatType.Default);                //下载文件                System.IO.FileInfo file = new System.IO.FileInfo(filepath);                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);                Response.Flush();//这个语句必须有，否则就不回弹出保存的对话框                Response.Close();                // 停止页面的执行                 Response.End();            }            catch (Exception e)            {                Page.ClientScript.RegisterStartupScript(typeof(System.Web.UI.Page), "script", "alert('" + e.Message + "');", true);            }            finally            {                if (File.Exists(filepath))                {                    File.Delete(filepath);   //删除文件                }            }        }

 Aspose.Excel.dll下载地址