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Asked: 2026-05-11T04:11:30+00:00

Is there a tool to import/convert COM type libraries into C# code rather than

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Is there a tool to import/convert COM type libraries into C# code rather than generating an assembly? The TLBIMP tool and the TypeLibaryConverter class only generate assemblies.

I’ve had some success ripping the C# ComImport definitions by running Reflector over the generated Interop assembly and copying a pasting the disassembled source, but this usually requires quite a bit of manual patching up before it’ll compile.

Desired goal is a single EXE without satellite Interop DLLs, so perhaps the answer is to use ILMerge to effectively embed the interop DLL in the EXE.

I was sure in the past I’d come across such a tool – but maybe it dreamt it 🙂

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  1. As I originally suspected the best solution is going with ILMerge. I can’t be selective about parts of a COM API to embed, but it works well enough.

    Here is the Post Build Event Command Line I’m using, which should be easy enough to reuse:

    set MERGEFILES=Interop.Foo.dll Interop.Bar.dll  if '$(ConfigurationName)' == 'Release' (    ren '$(TargetFileName)' '_$(TargetFileName)'    '$(ProgramFiles)\Microsoft\ILMerge\ILMerge.exe' /out:'$(TargetFileName)' '_$(TargetFileName)' %MERGEFILES%     del '_$(TargetFileName)'    del %MERGEFILES% )
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