如何在C#中访问父对象 [英] How to access to the parent object in c#

问题描述

我有一个仪表"课程. 仪表"的一个属性是称为生产"的另一类. 我需要通过 引用 从生产类访问电表类(功率额定值)的属性.在Meter的实例化时，powerRating未知.

I have a "meter" class. One property of "meter" is another class called "production". I need to access to a property of meter class (power rating) from production class by reference. The powerRating is not known at the instantiation of Meter.

我该怎么做?

预先感谢

public class Meter
{
   private int _powerRating = 0; 
   private Production _production;

   public Meter()
   {
      _production = new Production();
   }
}

推荐答案

将对仪表实例的引用存储为Production中的成员:

Store a reference to the meter instance as a member in Production:

public class Production {
  //The other members, properties etc...
  private Meter m;

  Production(Meter m) {
    this.m = m;
  }
}

然后在仪表类中:

public class Meter
{
   private int _powerRating = 0; 
   private Production _production;

   public Meter()
   {
      _production = new Production(this);
   }
}

还请注意，您需要实现访问器方法/属性，以便Production类可以实际访问Meter类的powerRating成员.

Also note that you need to implement an accessor method/property so that the Production class can actually access the powerRating member of the Meter class.

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