ASP便捷导出Excel 

 1 /// <summary>
 2         /// 导出正式EXCEL
 3         /// </summary>
 4         /// <param name="sender">发送方</param>
 5         /// <param name="e">事件参数</param>
 6         protected void btn_FinaExcel_Click(Object sender, EventArgs e)
 7         {
 8             DataSet ds = new DataSet();
 9             ds = _reportBO.GetrpInfoToExcelByFina(DateTime.Now);//获取需要导出的数据，此数据要有头部作为excel的首行标题
10             DataGrid dg = new DataGrid();
11             dg.DataSource = ds;
12             dg.DataBind();
13             Export(dg, "导出表格.xls", "application/octet-stream");
14         } 
 1   private void Export(System.Web.UI.WebControls.DataGrid dg, string fileName, string typeName)
 2         {
 3             System.Web.HttpResponse httpResponse = Page.Response;
 4             httpResponse.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
 5             httpResponse.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
 6             httpResponse.ContentType = typeName;
 7             System.IO.StringWriter tw = new System.IO.StringWriter();
 8             System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
 9             dg.RenderControl(hw);
10             string filePath = Server.MapPath("..") + fileName;
11             System.IO.StreamWriter sw = System.IO.File.CreateText(filePath);
12             sw.Write(tw.ToString());
13             sw.Close();
14 
15             DownFile(httpResponse, fileName, filePath);
16             httpResponse.End();
17         }

 下载：

 1     private bool DownFile(System.Web.HttpResponse Response, string fileName, string fullPath)
 2         {
 3             try
 4             {
 5                 Response.ContentType = "application/octet-stream";
 6 
 7                 Response.AppendHeader("Content-Disposition", "attachment;filename=" +
 8                 HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8) + ";charset=GB2312");
 9                 System.IO.FileStream fs = System.IO.File.OpenRead(fullPath);
10                 long fLen = fs.Length;
11                 int size = 102400;//每100K同时下载数据 
12                 byte[] readData = new byte[size];//指定缓冲区的大小 
13                 if (size > fLen) size = Convert.ToInt32(fLen);
14                 long fPos = 0;
15                 bool isEnd = false;
16                 while (!isEnd)
17                 {
18                     if ((fPos + size) > fLen)
19                     {
20                         size = Convert.ToInt32(fLen - fPos + 1);
21                         readData = new byte[size];
22                         isEnd = true;
23                     }
24                     fs.Read(readData, 0, size);//读入一个压缩块 
25                     Response.BinaryWrite(readData);
26                     fPos += size;
27                 }
28                 fs.Close();
29                 System.IO.File.Delete(fullPath);
30                 return true;
31             }
32             catch
33             {
34                 return false;
35             }
36         }

 

posted @ 2014-09-24 10:18  小蜗  阅读(168)  评论(0)    收藏  举报