/// <summary>/// 获取指定属性信息（非String类型存在装箱与拆箱）/// </summary>/// <typeparam name="T"></typeparam>/// <param name="select"></param>/// <returns></returns>public static PropertyInfo GetPropertyInfo<T>(Expression<Func<T,dynamic>> select){ var body = select.Body; if (body.NodeType == ExpressionType.Convert) { var o = (body as UnaryExpression).Operand; return (o as MemberExpression).Member as PropertyInfo; } else if (body.NodeType == ExpressionType.MemberAccess) { return (body as MemberExpression).Member as PropertyInfo; } return null;}/// <summary>/// 获取指定属性信息（需要明确指定属性类型，但不存在装箱与拆箱）/// </summary>/// <typeparam name="T"></typeparam>/// <typeparam name="TR"></typeparam>/// <param name="select"></param>/// <returns></returns>public static PropertyInfo GetPropertyInfo<T, TR>(Expression<Func<T, TR>> select){ var body = select.Body; if (body.NodeType == ExpressionType.Convert) { var o = (body as UnaryExpression).Operand; return (o as MemberExpression).Member as PropertyInfo; } else if (body.NodeType == ExpressionType.MemberAccess) { return (body as MemberExpression).Member as PropertyInfo; } return null;}/// <summary>/// 获取类型的所有属性信息/// </summary>/// <typeparam name="T"></typeparam>/// <param name="select"></param>/// <returns></returns>public static PropertyInfo[] GetPropertyInfos<T>(Expression<Func<T,dynamic>> select){ var body = select.Body; if (body.NodeType == ExpressionType.Parameter) { return (body as ParameterExpression).Type.GetProperties(); } else if(body.NodeType==ExpressionType.New) { return (body as NewExpression).Members.Select(m => m as PropertyInfo).ToArray(); } return null;}原文：http://www.cnblogs.com/shitaotao/p/7648261.html