MultiResourceWrapper.cs

public class MultiResourceWrapper : DynamicObject
{
    private readonly Dictionary<string, object> resources = new Dictionary<string, object>();
    public MultiResourceWrapper()
    {
        var assemblyNamespace = this.GetType().Assembly.GetManifestResourceNames();
        foreach (var s in assemblyNamespace)
        {
            var manager = new ResourceManager(ExtractResourceFullName(s), GetType().Assembly);
            var name = ExtractResourceName(s);
            resources.Add(name, new ResourceWrapper(manager));
        }
    }
        
    string ExtractResourceFullName(string s)
    {
        var regex = new Regex(@"(.*).resources$");
        return regex.Match(s).Groups[1].Value;
    }

    string ExtractResourceName(string s)
    {
        var regex = new Regex(@"([a|A-z|Z]*).resources$");
        return regex.Match(s).Groups[1].Value;
    }

    public override bool TryGetMember(GetMemberBinder binder, out object result)
    {
        result = resources[binder.Name];
        return true;
    }

    public class ResourceWrapper : DynamicObject
    {
        readonly ResourceManager manager;

        public ResourceWrapper(ResourceManager manager)
        {
            this.manager = manager;
        }

        public override bool TryGetMember(GetMemberBinder binder, out object result)
        {
            result = manager.GetString(binder.Name);
            return true;
        }
    }
}