C# Linq OrderBy反射与.分隔字符串

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public class Program
{
    public static void Main()
    {
        List<Person> people = new List<Person>
        {
            new Person { Name = "Alice", Age = 25 },
            new Person { Name = "Bob", Age = 30 },
            new Person { Name = "Charlie", Age = 20 }
        };

        string propertyName = "Age";
        string[] propertyNames = propertyName.Split('.');

        // 使用反射获取排序属性
        PropertyInfo property = typeof(Person).GetProperty(propertyNames[0]);
        if (propertyNames.Length > 1)
        {
            // 处理嵌套属性
            for (int i = 1; i < propertyNames.Length; i++)
            {
                property = property.PropertyType.GetProperty(propertyNames[i]);
            }
        }

        // 使用OrderBy方法进行排序
        var sortedPeople = people.OrderBy(p => property.GetValue(p));

        foreach (var person in sortedPeople)
        {
            Console.WriteLine(person.Name + " - " + person.Age);
        }
    }
}