Hosting CLR and programmatically providing app.config? - interop

Question

I have a native third party game, which allows me to write native extensions for it by exporting a particular function in a native DLL. I have been using this to host the CLR using C++/CLI compiler-generated hosting code, allowing me to call C# code from the game. This has been working great and it is a very elegant solution.
Once the CLR is loaded by the game, it searches game.exe.config in the game executable folder, for further .NET assembly probing information:
<?xml version="1.0"?>
<configuration>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<probing privatePath="#Arma2NET"/>
</assemblyBinding>
</runtime>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0,Profile=Client"/></startup></configuration>
This arbitrary config file breaks my folder structure; I would like my project to be self-contained in the #Arma2NET folder and not have random config files in the game folder. At the moment, having the project files in the same folder as the native CLR-hosting DLL is impossible because of the game's folder requirements.
Is there a way to programmatically provide the CLR with this config from native code when it is starting, short of writing the entirety of the CLR-hosting code myself?

Answer 1

I ended up using the AssemblyResolve event to tell .NET where to find the rest of my assemblies:
Assembly^ ResolveAssembly(Object ^sender, ResolveEventArgs ^e)
{
String ^directory = Path::GetDirectoryName(Assembly::GetExecutingAssembly()->Location);
AssemblyName ^assemblyName = gcnew AssemblyName(e->Name);
for each (String ^extension in gcnew array<String^> { ".dll", ".exe" })
{
String ^fileName = Path::Combine(directory, assemblyName->Name + extension);
try
{
return Assembly::LoadFile(fileName);
}
catch (...)
{
}
}
return nullptr;
}

Answer 2

How about you change the app.config in the library project build action to "Embedded Resource" then use something like ConfigurationManager.OpenMappedExeConfiguration to read it.