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Old 02-27-2012, 12:00 PM
Marton Marton is offline
Join Date: Nov 2011
Posts: 7
Default Manually add a method to a DLL - Possible?

Is there a way to add a method to a DLL?
I want to use a DLL of an older version of a target, in a newer version. On startup I get an error:
Method 'IsSecondInstance' in type 'App.Activator.Activator' from assembly 'App.Collector, Version=1.0.4198.19407, Culture=neutral, PublicKeyToken=null' does not have an implementation.
So I want to add "IsSecondInstance" manually, is it possible? Any tools to recommend? Thanks!
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Old 02-27-2012, 12:20 PM
kao kao is offline
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Join Date: Sep 2007
Posts: 184

Why do you want to use old DLL with new executable? In general it's a bad idea.

Normally I would suggest Mono.Cecil, as it can add new functions to assembly. But taken into account your previous question:
I doubt that it will work because Mono.Cecil cannot handle mixed-mode assemblies.

a) patch main exe so that it doesn't require IsSecondInstance and use old DLL or;
b) patch new DLL like normal people do.
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