CODEWITHSUNDEEP
c#
Alex Gorbunov
Alex Gorbunov

Reputation: 33

Invoke parent function in derived nested class

How to invoke function Run() from Controller class in class I2C?

class Program
{
    public class Controller
    {
        public void Run()
        {
        }
    }

    public class ChildController : Controller
    {
    }

    public class LowLevelController : ChildController
    {
        private class I2C
        {
            public I2C()
            {
            }

            // Want to call Controller.Run() from this level
        }

        public void Computate()
        {
            base.Run();
        }
    }
}

Upvotes: 1

Views: 69

Answers (2)

Christoph
Christoph

Reputation: 3642

I think what you want is simply:

public class LowLevelController : ChildController {

    private class I2C {

        public I2C(LowLevelController outerInstance) {
            OuterInstance = outerInstance;
        }

        private LowLevelController OuterInstance { get; }

        private void DoSomething() {
            OuterInstance.Run();
        }

    }

}

Upvotes: 0

Anu Viswan
Anu Viswan

Reputation: 18155

Option 1

One way to achieve this would be exposing method in I2C which accepts an Action. This would allow the instance of I2C, which is a private class defined within LowLevelController to invoke Controller.Run. For example,

 private class I2C
 {
     public I2C()
     {
     }

     public void RunBase(Action execute)
     {
        execute.Invoke();
     }
 }

Now you could execute the RunBase as

 public void Computate()
 {
    var i2c = new I2C();
    i2c.RunBase(()=>base.Run());
 }

Option 2

The other option would be to pass an instance of LowLevelController to I2C and invoke the Controller.Run method

Example,

public class LowLevelController : ChildController
{
    private class I2C
    {
       private LowLevelController _parent;
       public I2C(LowLevelController parent)
       {
          _parent = parent;
       }

       public void RunBase()
       {
          _parent.Run();
       }
    }

     public void Computate()
     {
         var i2c = new I2C(this);
         i2c.RunBase();
     }
}

Upvotes: 2

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