Object Creation and Instantiation

In this article I am trying an alternative approach for Multiple Inheritance.

In C sharp Multiple Inheritance is not possible to achieve this is well known. i.e. You cannot inherit from two classes.

Program : ClassA , ClassB // This cannot be achieved
{

}

So lets try an alternative approach where we can leverage the advantages of Multiple Inheritance . Please note that I have not used Reflection in this example , that is not the scope of this article .


Consider ClassA and ClassB as the two classes whose functionality we need to access .

class ClassA
{
public string member { get; set; }
public ClassA()
{
Console.WriteLine("A constructor is called");
member = "Member of ClassA";
}
public void display()
{
Console.WriteLine("Display A");
}
}

class ClassB
{
public string member { get; set; }
public ClassB()
{
Console.WriteLine("B constructor is called");
member = "Member of ClassB";
}
public void display()
{
Console.WriteLine("Display B");
}
}

Creating a Router :

Let us create a Router Interface .

interface IRouter
{
void display(string param);
}


The Router class looks as follows :

class Router : IRouter
{
public string member { get; set; }

public Router(string param)
{
if (param == "A")
{
new ClassA();
member = new ClassA().member;
}
else if (param == "B")
{
new ClassB();
member = new ClassB().member;
}
}

public void display(string param)
{
if (param == "A")
{
new ClassA().display();
}
else if (param == "B")
{
new ClassB().display();
}
}
}

class Program
{
static void Main(string[] args)
{
IRouter router = new Router("A");
router.display("B");
Console.Read();
}
}


The following output is displayed :



Conclusion

This is a simple Router which routes the method calls to Respective classes based on the User Input. Hopefully it would be useful. Thanks .