Reference custom assembly as x86 using #r

I am aware that I can reference a custom assembly using #r "path/to/assembly.dll"

My question is that since the latest version of Workbooks I get a BadImageFormatException because it must be trying to load the 32-bit DLL into a 64-bit environment. Is there any way to force everything to 32-bit to load my custom DLL? This is a WPF workbook on Windows.



  • SandyArmstrongSandyArmstrong USXamarin Team, Insider Xamurai

    Since 1.0, we changed the Windows workbook apps to be AnyCPU, but no longer preferring 32-bit. So you are correct: they are running as 64-bit processes.

    There is no good workaround for this right now. You could use CorFlags to modify the EXE (as described in ), but that could cause other trouble down the line. FWIW, the EXE is something like C:\Program Files (x86)\Xamarin\Workbooks\WorkbookApps\WPF\Xamarin.Workbooks.Wpf.exe.

    Please file a bug if you'd like to see explicit 32-bit support in the future.

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