//以字符流的形式下载文件
        FileStream fs = new FileStream(filePath, FileMode.Open);
        byte[] bytes = new byte[(int)fs.Length];
        fs.Read(bytes, 0, bytes.Length);
        fs.Close();
        Response.ContentType = "application/octet-stream";
        //通知浏览器下载文件而不是打开
        Response.AddHeader("Content-Disposition", "attachment;  filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
        Response.BinaryWrite(bytes);
        Response.Flush();
        Response.End(); 我用这种方法下载只能弹出对话框下载工具接收不到请哪位高人指点下

解决方案 »

  1.   

    string fileName = "";//客户端保存的文件名
                string filePath = Server.MapPath("");//路径
                FileStream fs = new FileStream(filePath, FileMode.Open);
                byte[] bytes = new byte[(int)fs.Length];
                fs.Read(bytes, 0, bytes.Length);
                fs.Close();
                Response.ContentType = "application/octet-stream";
                Response.AddHeader("Content-Disposition", "attachment;   filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
                Response.BinaryWrite(bytes);
                Response.Flush();
                Response.End();
    FileInfo fileInfo = new FileInfo(filePath);
                Response.Clear();
                Response.ClearContent();
                Response.ClearHeaders();
                Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
                Response.AddHeader("Content-Length", fileInfo.Length.ToString());
                Response.AddHeader("Content-Transfer-Encoding", "binary");
                Response.ContentType = "application/octet-stream";
                Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
                Response.WriteFile(fileInfo.FullName);
                Response.Flush();
                Response.End();
      

  2.   


    public void downloadfile(string FileName)   
    {   
       
      //打开要下载的文件   
      System.IO.FileStream r = new System.IO.FileStream(Server.MapPath(FileName), System.IO.FileMode.Open);   
      //设置基本信息   
      Response.Buffer = false;   
      Response.AddHeader("Connection", "Keep-Alive");   
      Response.ContentType = "application/octet-stream";   
      Response.AddHeader("Content-Disposition", "attachment;filename=" + System.IO.Path.GetFileName(FileName));   
      Response.AddHeader("Content-Length", r.Length.ToString());   
       
       
      while (true)   
      {   
      //开辟缓冲区空间   
      byte[] buffer = new byte[1024];   
      //读取文件的数据   
      int leng = r.Read(buffer, 0, 1024);   
      if (leng == 0)//到文件尾,结束   
      break;   
      if (leng == 1024)//读出的文件数据长度等于缓冲区长度,直接将缓冲区数据写入   
      Response.BinaryWrite(buffer);   
      else   
      {   
      //读出文件数据比缓冲区小,重新定义缓冲区大小,只用于读取文件的最后一个数据块   
      byte[] b = new byte[leng];   
      for (int i = 0; i < leng; i++)   
      b[i] = buffer[i];   
      Response.BinaryWrite(b);   
      }   
      }   
      r.Close();//关闭下载文件   
      Response.End();//结束文件下载   
    }