Calling the overriden method from the base class

Code:

---

public class BaseClass
{
        public virtual void MyMethod()
        {
                ...do something...
        }
}

public class A : BaseClass
{
        public override void MyMethod()
        {
                ...do something different...
        }
}

public class B : BaseClass
{
        public override void MyMethod()
        {
                ...do something different...
        }
}

public class AnotherObject
{
        public AnotherObject(BaseClass someObject)
        {
                someObject.MyMethod(); //This calls the BaseClass method, unfortunately.
        }
}

---

I would like to call the MyMethod() that is actually found in A or B, assuming the object passed in is actually an instance of A or B, not that which is found in BaseClass. Short of doing something like this:

Code:

---

public class AnotherObject
{
        public AnotherObject(BaseClass someObject)
        {
                A temp1 = someObject as A;
                if (A != null)
                {
                        A.MyMethod();
                }
               
                B temp2 = someObject as B;
                if (B != null)
                {
                        B.MyMethod();
                }
        }
}

---

How can I do it?

Code:

---

using System;

namespace ConsoleApplication8
{
    class Program
    {
        static void Main(string[] args)
        {
            AnotherObject test;
            test = new AnotherObject(new A());
            test = new AnotherObject(new B());
            test = new AnotherObject(new BaseClass());
            Console.Read();
        }
    }

    public class BaseClass
    {
        public virtual void MyMethod()
        {
            Console.WriteLine("base class");
        }
    }

    public class A : BaseClass
    {
        public override void MyMethod()
        {
            Console.WriteLine("class A");
        }
    }

    public class B : BaseClass
    {
        public override void MyMethod()
        {
            Console.WriteLine("class B");
        }
    }

    public class AnotherObject
    {
        public AnotherObject(BaseClass someObject)
        {
            someObject.MyMethod();
        }
    }
}

---

This seems to work fine, unless I'm not understanding your question?

Oops. I just realized my problem. One of my several classes which I thought was overriding the said function actually wasn't.

Problem solved :)