在.NET 5.0 / C# 9.0中从子实例访问父实例数据

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

public class Employee : Person
{
    public void DisplayInfo()
    {
        Console.WriteLine($"Name: {Name}, Age: {Age}");
    }
}

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

public class Employee : Person
{
    public void DisplayInfo()
    {
        Console.WriteLine($"Name: {Name}, Age: {Age}"); // 现在可以访问Age
    }
}

using System;

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

public class Employee : Person
{
    public void DisplayInfo()
    {
        Console.WriteLine($"Name: {Name}, Age: {Age}");
    }
}

class Program
{
    static void Main(string[] args)
    {
        Employee emp = new Employee
        {
            Name = "John Doe",
            Age = 30 // 通过子类构造函数或直接设置
        };
        emp.DisplayInfo();
    }
}