Can I load a 32 bit DLL into a 64 bit process on Windows?

Posted by Lee on Stack Overflow See other posts from Stack Overflow or by Lee
Published on 2008-10-22T10:25:29Z Indexed on 2010/06/10 13:32 UTC
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Filed under:

.NET

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Windows

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64bit

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x86-64

I recently upgraded a c# windows service to run as a 64 bit .net process. Normally, this would be trivial, but the system makes use of a 32-bit DLL written in C++. It is not an option to convert this DLL to 64 bit, so I wrapped the DLL in a separate 32 bit .net process and exposed a .net interface via remoting.

This is quite a reliable solution, but I would prefer to run the system as a single process. Is there any way I can load my 32 bit DLL into a 64 bit process and access it directly (perhaps through some sort of thunking layer)?

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