How to use Visual Studio to compile a website project having a 64 Bit dll reference?

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I have a website project in my .NET 4.0 solution. It has a reference to a 64 Bit dll. I am able to build / compile it from the command prompt. However, the build from Visual Studio fails with a bad image format exception, since Visual Studio by default uses the 32 Bit version of the compiler when compiling a website.

I tried setting the Toolpath property of the ASPNETCompiler task in the solution file, but Visual Studio does not seem to pick that up.

Is there a way to configure Visual Studio to use 64 Bit Compiler while compiling a website?

Posted 6-Jun-13 0:24am

Angshuman1977

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Stephen Hewison · Answer 1 · 2013-06-06T01:58:00

Solution 1

Yes. In your project properties there is a platform setting which can be set to 32bit, 64bit or Any. You should be able to set this to force 64bit compilation.

How to: Configure Projects to Target Platforms[^]

Posted 6-Jun-13 1:58am

Stephen Hewison

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Angshuman1977 7-Jun-13 0:17am

Stephen, thanks for your response. However, my project which I am trying to build in 64 Bit is a "website" and hence, it does not have any option to select a platform, other than "Any CPU". That is where the problem is. If I convert the website into a web application, I can set the platform to x64 and work without any problem.

zairja 19-Mar-20 21:48pm

Did you solve this?