Lambda获取类属性的名字

using System;
using System.ComponentModel;
using System.Linq.Expressions;
using System.Reflection;

public static class ClassExt
    {
        private static MemberInfo GetMemberInfo(Expression expression)
        {
            LambdaExpression lambdaExpression = (LambdaExpression)expression;
            MemberExpression memberExpression = (!(lambdaExpression.Body is UnaryExpression))
                ? ((MemberExpression)lambdaExpression.Body)
                : ((MemberExpression)((UnaryExpression)lambdaExpression.Body).Operand);
            return memberExpression.Member;
        }
        public static string PropName<TProperty>(this object obj, Expression<Func<TProperty>> property)
        {
            return GetMemberInfo(property).Name;
        }
    }    class A {
        public int Prop { get; set; }
        private void Example()
        {
            string propName = this.PropName(() => Prop);
            Console.WriteLine(propName);    //Prop
        }
    }