Can i access outer class objects in inner class [duplicate]

问题

I have three classes like this.

class A
{
    public class innerB
       {
       //Do something
       }

    public class innerC
       {
        //trying to access objB here directly or indirectly over here. 
        //I dont have to create an object of innerB, but to access the object created by A
        //i.e.
             innerB objInnerB = objB;
        //not like this
             innerB objInnerB= new innerB();
       }

private innerB objB{get;set;}  **//Private**

public A()
   {
    objB= new innerB();
   }
}

I want to access the object of class B in Class C that is created by class A. Is it possible somehow to make changes on object of Class A in Class C. Can i get Class A's object by creating event or anyhow.

Edit: My mistake in asking the question above. Object of B created in A is private not public

IS IT POSSIBLE TO DO THIS BY CREATING EVENT

If anyhow I become able to raise an event that can be handled by Class A, then my problem can be solved.

回答1:

If I'm reading you correctly you want to access the objB property of class A within innerC WITHOUT passing it along.

This isn't how C# inner classes work, as described in this article: C# nested classes are like C++ nested classes, not Java inner classes

If you want to access A.objB from innerC then you are going to have to somehow pass class A to innerC.

回答2:

You need to pass a reference of OuterClass to InnerClass, perhaps in the constructor, like:

public class OuterClass
{
    //OuterClass methods

    public class InnerClass
    {
        private OuterClass _outer;

        public InnerClass(OuterClass outer)
        {
            _outer = outer;
        }
    }
}

Then you can use that reference in all of your InnerClass methods.

回答3:

Since your class B is within the same scope as class C, that is, within class A, you will be able to instantiate the nested type B from nested type C and use it.

来源：https://stackoverflow.com/questions/2957900/can-i-access-outer-class-objects-in-inner-class

标签

oop

class

event-handling

delegates