GetAssemblies is never called in IAassembliesResolver

Question

Currently I try to override the assembly resolving in ASP.Net WebApi 2. Overrideing:

var resolver = new ExtendedAssemblyResolver(new[] { dynAsm });

// Add a list of dynamically loaded assemblies
GlobalConfiguration.Configuration.Services.Replace(typeof(IAssembliesResolver), resolver);

The resolver looks like this:

public class ExtendedAssemblyResolver : DefaultAssembliesResolver
{
    private string[] dynamicAssemblies;

    public ExtendedAssemblyResolver(string[] dynamicAssemblies)
    {
        System.Diagnostics.Debugger.Launch();
        this.dynamicAssemblies = dynamicAssemblies;
    }

    public ICollection<Assembly> GetAssemblies()
    {
        var baseAssemblies = base.GetAssemblies();
        var assemblies = new List<Assembly>(baseAssemblies);

        if (dynamicAssemblies != null)
        {
            foreach (var asm in dynamicAssemblies)
            {
                var controllersAssembly = Assembly.LoadFrom(asm);
                baseAssemblies.Add(controllersAssembly);
            }
        }

        return baseAssemblies;
    }
}

The problem is, that GetAssemblies is never called.

I've also tried to replace the resolver in my Startup class, but this does not help either:

public void Configuration(IAppBuilder appBuilder)
{
    // Configure Web API for self-host. 
    HttpConfiguration config = new HttpConfiguration();
    // -- here
}

Thanks a lot!

Answer 1

You are missing the override

public class ExtendedAssemblyResolver : DefaultAssembliesResolver
{
    private string[] dynamicAssemblies;

    public ExtendedAssemblyResolver(string[] dynamicAssemblies)
    {
        System.Diagnostics.Debugger.Launch();
        this.dynamicAssemblies = dynamicAssemblies;
    }

    public override ICollection<Assembly> GetAssemblies()
    {
        var baseAssemblies = base.GetAssemblies();
        var assemblies = new List<Assembly>(baseAssemblies);

        if (dynamicAssemblies != null)
        {
            foreach (var asm in dynamicAssemblies)
            {
                var controllersAssembly = Assembly.LoadFrom(asm);
                baseAssemblies.Add(controllersAssembly);
            }
        }

        return baseAssemblies;
    }
}