How to call an object from another method in C#

Can anyone help a novice C# beginner? I'm attempting to call an object created in the same class but a different method. Both methods were called from another class. Below is simplied code. I've left out other code that the methods perform. An error indicates the "listener" object isn't recognized in the 2nd method. Thank you for any help your can offer.

// this 1st class calls methods of a 2nd class
public class Lru_operation
{
    // create an object of the 2nd class
    public Lru_Listen LruListen = new Lru_Listen();

    // this method calls two methods from other class   
    public void LruOperation()
    {   
        LruListen.ListenForAag();          // first method call

        LruListen.LruListenAccReq();       // second method call 
    }
}

// this is the 2nd class 
public class Lru_Listen
{
    // 1st method creates an object from a different class (HttpListener)
    public void ListenForAag()
    {
        HttpListener listener = new HttpListener(); 
    }

    // 2nd method calls 1st method's object to perform 
    // a method task from a different class
    public void LruListenAccReq()
    {
        HttpListenerContext context = listener.Getcontext();        
    }
}