Creating an object using Lambda Expressions

gistfile1.cs

    public static class ReflectionHelper
    {
        public static T CreateInstance<T>()
        {
            var constructor = Expression.New( typeof(T) );
            var instance = (Func<T>)Expression.Lambda(constructor).Compile();
            return instance();
        }

        public static T CreateInstance<T>(params object[] args)
        {
            var argumentTypes = args.Select(a => a.GetType()).ToArray();
            var argumentExpressions = argumentTypes.Select((t, i) => Expression.Parameter(t, "param" + i)).ToArray();
            var constructorInfo = typeof(T).GetConstructor(argumentTypes);
            var constructor = Expression.New(constructorInfo, argumentExpressions);
            var instance = Expression.Lambda(constructor, argumentExpressions).Compile();
            return (T)instance.DynamicInvoke(args);
        }
    }