Is it possible to Add/Remove/Change an embedded resource in .NET DLL?

Question

Is it possible to add/remove/change an embedded resource in a .NET DLL after it has been compiled? If so, how is this done, and are there any gotchas?

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Answer 1

Yes, this is possible, by doing a roundtrip with ILDASM and ILASM, replacing the embedded files inbetween.

Gotchas:

• you need the strong name key file if the assembly was strong-named, or you'll not get the same assembly name in the end
• if the assembly was signed with a certificate, you need the certificate including the private key to re-sign it if needed
• obfuscated assemblies may fail to roundtrip due to name issues