C# Create lambda over given method that injects first paramater

There is actually another solution that does not involve emiting new Expressions (could fail on iOS!)

First, let us define following wrapper:

    private class Wrapper
    {
        public readonly object container;
        public readonly MethodInfo method;
        public readonly ScriptEngine engine;

        public Wrapper(object container, MethodInfo method, ScriptEngine engine)
        {
            this.container = container;
            this.method = method;
            this.engine = engine;
        }

        public Action CreateAction()
        {
            return () => method.Invoke(container, new object[] { engine });
        }
        public Action<T1> CreateAction<T1>()
        {
            return (arg1) => method.Invoke(container, new object[] { engine, arg1 });
        }
        // etc
    }

Now you can register method like that:

        var type = typeof(Wrapper);
        var instance = Activator.CreateInstance(type, new object[] { container, methodInfo, engine });
        MethodInfo methodActual = null;
        if (methodInfo.ReturnType == typeof(void))
        {
            var methods = type.GetMethods().Where(x => x.Name == "CreateAction");

            foreach (var method in methods)
            {
                if (method.GetGenericArguments().Length == methodInfo.GetParameters().Length - 1)
                {
                    methodActual = method.MakeGenericMethod(methodInfo.GetParameters().Skip(1).Select(x => x.ParameterType).ToArray());
                }
            }
        }
        var actionToRegister = methodActual.Invoke(instance, new object[0]);