LosManos

    class ReflectionUtility
    {

        public static string GetPropertyName<T, TReturn>(Expression<Func<T, TReturn>> expression)
        {
            MemberExpression body = (MemberExpression)expression.Body;
            return body.Member.Name;
        }

        public static string GetMethodName<T, TReturn>(Expression<Func<T, TReturn>> expression)
        {
            var body = expression.Body as UnaryExpression;
            var operand = body.Operand as MethodCallExpression;
            var argument = operand.Arguments[2] as ConstantExpression;
            var methodInfo = argument.Value as System.Reflection.MethodInfo;

            return methodInfo.Name;
        }

    }


    class MyClass
    {
        public int MyField;
        public int MyPublicProperty { get; set; }
        public  string MyReadonlyProperty { get { return string.Empty; } }
        public int MyMethod() { return 0; }

        private MyClass() { }   // To make sure the class doesn't need a default constructor.
    }


    class Program
    {
        static void Main(string[] args)
        {
            string fieldName = ReflectionUtility.GetPropertyName((MyClass x) => x.MyField);
            Console.WriteLine(string.Format("MyClass.MyField:{0}", fieldName));
            Debug.Assert("MyField" == fieldName);

            string propertyName = ReflectionUtility.GetPropertyName((MyClass x) => x.MyPublicProperty);
            Console.WriteLine(string.Format("MyClass.MyPublicProperty:{0}", propertyName));
            Debug.Assert("MyPublicProperty" == propertyName);

            propertyName = ReflectionUtility.GetPropertyName((MyClass x) => x.MyReadonlyProperty);
            Console.WriteLine(string.Format("MyClass.MyReadonlyProperty :{0}", propertyName));
            Debug.Assert("MyReadonlyProperty" == propertyName);

            string methodName = ReflectionUtility.GetMethodName<MyClass, Func<int>>((MyClass x) => x.MyMethod);
            Console.Write(string.Format("MyClass.MyMethod:{0}", methodName));
            Debug.Assert("MyMethod" == methodName);

            Console.Write(Environment.NewLine + "Press any key.");
            Console.ReadKey();
        }

    }