C#：多个类实例都做同样的事情

// 定义一个接口，表示共享的行为
public interface IAction
{
    void DoSomething();
}

// 定义两个类，实现接口
public class ClassA : IAction
{
    public void DoSomething()
    {
        Console.WriteLine("ClassA is doing something.");
    }
}

public class ClassB : IAction
{
    public void DoSomething()
    {
        Console.WriteLine("ClassB is doing something.");
    }
}

// 创建类的实例并调用共享的行为
public class Program
{
    public static void Main()
    {
        IAction action1 = new ClassA();
        IAction action2 = new ClassB();

        action1.DoSomething();
        action2.DoSomething();
    }
}