Question

I have an issue with log4net which has been bugging me for a while and I’ve resolved to sort it.

I have a class library which references log4net. If I reference this class library in another project I must then reference log4net in this project otherwise I get a build error

Unknown build error, 'Cannot resolve dependency to assembly 'log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.' 

I’m aware that the error message is probably telling me the solution, unfortunately I don’t speak gibberish…

Cheers guys

Alex..

Answer 1

Here is the link which describes what is happening and how to fix it:

https://learn.microsoft.com/en-us/archive/blogs/jmstall/viewing-types-with-reflection-only

An excerpt from the above link:

So what happened was that it tried to
get the System.Type for Bar, but to
resolve the type it needs to load the
base class, which is in another dll.
Reflection-Only context doesn’t do
binding policy so it can’t find that
dll. The LoaderException hint says to
use the ReflectionOnlyAssemblyResolve,
which provides more information about
this.

To use the reflection API, you have to resolve all the dependencies used.