Question

Possible Duplicate:
Multiple Inheritance in C#

I know that C# does not support multiple inheritance in classes.

However, I need to do add the feature of both ClassA and ClassB in MyClass:

public class ClassA
{
    /* Third party class*/
}
public class ClassB
{
    /* Third party class*/
}

public class MyClass : ClassA, ClassB
{
    /*Compilation error*/
}

Is there any way I can achieve this?

Answer 1

If you cannot change ClassA and ClassB I suggest creating subtypes for these classes and then aggregating.

//third party
class ClassA
{
    void X();
}
class ClassB
{
    void Y();
}
//your code
interface IClassA
{
    void X();
}
interface IClassB
{
    void Y();
}

class MyClassA : ClassA, IClassA { }
class MyClassB : ClassB, IClassB { }

class MyClass : IClassA, IClassB
{
    IClassA a = new MyClassA();
    IClassB b = new MyClassB();
    public void X()
    {
        a.X();
    }

    public void Y()
    {
        b.Y();
    }
}