C#设计-如何在没有空接口的情况下对列表中的类和枚举进行分组？

Func<MyClass, string> groupByCondition = (obj) => obj.Category;

var groupedData = myList.GroupBy(groupByCondition);

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

public class MyClass
{
    public string Name { get; set; }
    public string Category { get; set; }
}

public class Program
{
    public static void Main()
    {
        List<MyClass> myList = new List<MyClass>
        {
            new MyClass { Name = "Object1", Category = "Category1" },
            new MyClass { Name = "Object2", Category = "Category2" },
            new MyClass { Name = "Object3", Category = "Category1" },
            new MyClass { Name = "Object4", Category = "Category2" }
        };

        Func<MyClass, string> groupByCondition = (obj) => obj.Category;

        var groupedData = myList.GroupBy(groupByCondition);

        foreach (var group in groupedData)
        {
            Console.WriteLine("Category: " + group.Key);
            foreach (var item in group)
            {
                Console.WriteLine("Name: " + item.Name);
            }
            Console.WriteLine();
        }
    }
}

Category: Category1
Name: Object1
Name: Object3

Category: Category2
Name: Object2
Name: Object4