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Asked: 2026-05-11T13:41:51+00:00

So the problem is half the app is written in classic asp and half

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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.

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1 Answer

  1. 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).

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