How to access variable of an Outer class in the inner class in c#

Question

i have two class i need to declare a variable common to both the classes..

In case of Nested classes i need to access the Outer class variable in the inner class

please give me a better way to do this in c#.

Sample code

 Class A
   {
     int a;
     Class B
        {
               // Need to access " a" here
        }
    }

Thanks in advance

CAn you post a short code sample so we can have a better idea of what you are doing? — Paddy, Jun 29 '10 at 10:02

score 11 · Accepted Answer · answered Jun 29 '10 at 09:57

11

First suggestion is to pass a reference to the Outer class to the Inner class on construction, so Inner class that then reference Outer class properties.

answered Jun 29 '10 at 09:57

Dr Herbie

3,930
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2

It's quite self explanatory, really. Give it a try first. – Quick Joe Smith Jun 29 '10 at 10:14

score 5 · Answer 2 · answered Jun 29 '10 at 10:12

5

public Class Class_A
{
    int a;

    public Class Class_B
    {
        Class_A instance;

        public Class_B(Class_A a_instance)
        {
            instance = a_instance;
        }

        void SomeMethod()
        {
            int someNumber = this.instance.a;
        }
    }
}

answered Jun 29 '10 at 10:12

Jason Down

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without creating an instance ? – Thorin Oakenshield Jun 29 '10 at 10:14
How would I call Class_B and pass in Class_A then? – Euridice01 Dec 08 '16 at 04:20

score 0 · Answer 3 · answered Jun 29 '10 at 10:08

From your example, you probably need to pass a as a parameter to B in it's constructor - there's not way to access it otherwise. Having this as a 'child' class may not be a great design, however, but there's not enough information to really know either way.

How to access variable of an Outer class in the inner class in c#

3 Answers3

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