Classic ASP: posting with content of PDF file to a .NET page

StackOverflow https://stackoverflow.com/questions/699687

  •  22-08-2019
  •  | 
  •  

Question

So the problem is half the app is written in classic asp and half is in asp.net. There's a PDF file (in memory) that is generated by classic asp code that I need to share with the .NET half. I thought of saving the PDF to the FS or DB, which I am pretty sure most of you wouldn't recommend because it would need to go through a very slow process of saving to IO, and then I would need to manually clean up after -- unnecessarily creating more bottlenecks and failure points.

I thought of mimicking a post from the classic asp page to .NET by using Server.Transfer or Microsoft.XMLHTTP objects, but neither exactly fits the scenario as I really do want the URL on the client side to be pointing at the .NET aspx page. So is there a simple way to manufacture a POST from classic ASP to a .NET page with a PDF file embedded?

Thanks in advance for any comments or suggestions.

Was it helpful?

Solution

Somewhat of a hack, but...

Create a form in classic ASP with a field that you populate with the data from the PDF file. The action of the form would be the ASP.NET page. Something like:

<body onload="pdfsenderform.submit()">
    <form name="pdfsenderform" action="pdf.aspx" method="post">
       <input type="hidden" name="pdffiledata" value="<%...output your PDF data here...%>" />
   </form>
</body>

You might need to encode the binary PDF data prior to writing it to the form field (Base64 or something).

OTHER TIPS

Your best bet is probably the FS or DB considering the difficulties ASP.NET and ASP interaction. That's my "path of least resistance".

Just write it to disk, store the filename in a cookie or querystring, and Response.Redirect the user. It's likely to be "fast enough" and much easier than writing a least common denominator State Server accessible over TCP to both of them - which is the only in memory way of doing I can think of.

Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow
scroll top