无法在 IE 6、7、8 中从 HTTPS 下载 PDF

Question

mpp.myPDF(Response.OutputStream);  // PdfDocument...
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + filename);

【HTTP】

IE、Firefox、Chrome：一切正常

【HTTPS】

IE 9,10,11：好的
火狐：好的
Chrome ：好的

但是在

IE 6,7,8 = X......显示错误

Internet Explorer was not able to open this Internet site, the requested site is either unavailable or cannot be found.

protected void OnPrintClick(object sender, EventArgs e)
{

    if ((Request.Browser.Browser == "IE") && (Request.Browser.MajorVersion < 9))
    {
        Response.ExpiresAbsolute = DateTime.Now;
        Response.Expires = -1441;
        Response.CacheControl = "no-cache";
        Response.AddHeader("Pragma", "no-cache");
        Response.AddHeader("Pragma", "no-store");
        Response.AddHeader("cache-control", "no-cache");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.Cache.SetNoServerCaching();
        Response.Clear();
        Response.Expires = 0;
        Response.Buffer = true;
        Response.HeaderEncoding = System.Text.Encoding.Default;
    }

   //↑
   // I try to add these code are invalid....【Https】 IE 6、7、8.... X

    mpp.myPDF(Response.OutputStream);  // PdfDocument...
    Response.ContentType = "application/octet-stream";
    Response.AppendHeader("Content-Disposition", "attachment;filename=" + filename);
 }

我们如何解决这个问题？

Answer 1

考虑将 ContentType 设置为 "application/pdf" 并在尝试流式传输到 client/browser 之前清除所有内容：

    Response.Buffer = false;

    Response.Clear();
    Response.ClearContent();
    Response.ClearHeaders();

    Response.ContentType = "application/pdf";
    Response.AddHeader("Content-Disposition", "attachment; filename=" + filename");         
    mpp.myPDF(Response.OutputStream);  // PdfDocument...
    //could also consider: 
    //Response.TransmitFile("path to document");
    //Response.BinaryWrite((byte[]) stream);
    Response.End()

无法在 IE 6、7、8 中从 HTTPS 下载 PDF

Can't Download PDF from HTTPS in IE 6,7,8

c#

pdf

asp.net

internet-explorer

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