为什么我不能从同一页面下载2个不同的文件？

Question

我正在使用这两个功能从一个页面下载2个不同的文件。

RenderReport用于下载已发送给它的rdlc报告，即LocalReport和DOWNLOAD（）用于下载pdf文件。

现在的问题是，其中一个不同时工作。如果我下载RDLC报告，那么pdf下载不起作用或反过来。它抛出异常，即浏览器检测到重复标题等。

  public void Download() 
    {
        try
        {
            MemoryStream memStream = Export(html); // returns a memory stream object
            byte[] bytesInStream = memStream.ToArray();
            Response.Clear();
            Response.ContentType = "application/pdf";
            Response.Headers.Remove("content-disposition");
            Response.AddHeader("content-disposition", "attachment;    filename=name_you_file.pdf");

            Response.BinaryWrite(bytesInStream);
            Response.End();
            Response.Flush();

        }
        catch (Exception)
        {

            throw;
        }
    }



    private void RenderReport(LocalReport localReport)
    {
        try
        {

            //Give the collection a name (EmployeeCollection) so that we can reference it in our report designer

            var reportType = "PDF";
            string mimeType;
            string encoding;
            string fileNameExtension;


            var deviceInfo =
                string.Format("<DeviceInfo><OutputFormat>{0}</OutputFormat><PageWidth>8.27in</PageWidth><PageHeight>11.69in</PageHeight><MarginTop>0.3in</MarginTop><MarginLeft>0.3in</MarginLeft><MarginRight>0.3in</MarginRight><MarginBottom>0.3in</MarginBottom></DeviceInfo>", reportType);

            Warning[] warnings;
            string[] streams;


            //Render the report
            var renderedBytes = localReport.Render(
                reportType,
                deviceInfo,
                out mimeType,
                out encoding,
                out fileNameExtension,
                out streams,
                out warnings);

            //Clear the response stream and write the bytes to the outputstream
            //Set content-disposition to "attachment" so that user is prompted to take an action
            //on the file (open or save)
            Response.Clear();
            Response.ContentType = mimeType;
            Response.AddHeader("content-disposition", "attachment; filename=Tender." + fileNameExtension);
            Response.BinaryWrite(renderedBytes);
            Response.End();
            Response.Flush();
        }
        catch (Exception ex)
        {

        }
    }