LinQ动态排序

using System;
using System.Linq;

class Program
{
    static void Main()
    {
        string sortingField = "Name"; // 排序字段，可以在运行时动态指定
        bool isAscending = true; // 排序方式，可以在运行时动态指定

        // 数据源
        var users = new[]
        {
            new { Name = "Alice", Age = 25 },
            new { Name = "Bob", Age = 30 },
            new { Name = "Charlie", Age = 20 }
        };

        // 动态排序
        var sortedUsers = isAscending ?
            users.OrderBy(u => GetValueByFieldName(u, sortingField)) :
            users.OrderByDescending(u => GetValueByFieldName(u, sortingField));

        // 输出排序结果
        foreach (var user in sortedUsers)
        {
            Console.WriteLine($"Name: {user.Name}, Age: {user.Age}");
        }
    }

    // 根据字段名获取字段值
    static object GetValueByFieldName(object obj, string fieldName)
    {
        return obj.GetType().GetProperty(fieldName).GetValue(obj);
    }
}