有关C#中的引用类型的内存问题
2021-04-01 05:28
标签:对象 赋值 family return this bsp void span his 对于一个类,如果定义后(记作对象a),将另外一个对象b直接赋值(“a = b”)给它,则相当于将地址赋值给了这个对象。当另外一个对象b不再对这块地址应用时,a由于对这块地址仍在使用,这块地址的指向的栈空间仍然不被销毁。直道没有对象再对其引用,系统将按照回收机制对其进行回收。 Demo如下: 有关C#中的引用类型的内存问题 标签:对象 赋值 family return this bsp void span his 原文地址:https://www.cnblogs.com/arxive/p/9242738.html public class ObjectRef
{
public static void Demo_Main()
{
PointD a, b, c;
b = new PointD(100, 58);
a = b;
b = new PointD(200, 11);
Console.WriteLine("a is now {0}, {1}", a.X, a.Y); // a is now 100, 58
c = new PointD(300, 22);
a = c;
c.X = 500;
Console.WriteLine("a is now {0}, {1}", a.X, a.Y); // a is now 500, 22
}
}
public class PointD
{
int x;
int y;
public int X
{
get { return x; }
set { x = value; }
}
public int Y
{
get { return y; }
set { y = value; }
}
public PointD(int x, int y)
{
this.x = x;
this.y = y;
}
}
上一篇:windows常用命令及批处理