深度复制与浅复制

浅复制

浅复制会连引用类型一起复制

public class Content { public int val; }
public class Cloner
{ 
    public Content MyContent = new Content();
    public Cloner(int newVal) => MyContent.val = newVal;
    public object GetCopy() => MemberwiseClone();
}
class Program
{
    static void Main(string[] args)
    {
        Cloner Test1 = new Cloner(10);
        Cloner Test2 = (Cloner)Test1.GetCopy();
        Test1.MyContent.val = 5;
        Console.WriteLine(Test2.MyContent.val);
        Console.ReadKey();
    }
}

此时,此处输出为5

表明Test2和Test1的引用类型一致

深度复制

为了解决上述引用类型的问题,可通过实现ICloneable接口中的方法Clone()进行深度复制

public object Clone()
{
    Cloner cloner = new Cloner(MyContent.val);
    return cloner;
}

static void Main(string[] args)
{
    Cloner Test1 = new Cloner(10);
    Cloner Test2 = (Cloner)Test1.Clone();
    Test1.MyContent.val = 5;
    Console.WriteLine(Test2.MyContent.val);
    Console.ReadKey();
}

此时输出值为10

由于传入的MyContent.val为一个值,不是引用类型,所以此时的复制为深度复制