Why C# does not support Multiple inheritance?

This old interview with Eric Gunnerson (one of the original members of the C# design team) describes the reasons why they decided not to support multiple inheritance :

As you'll see, the complexity of dealing with it wasn't the only reason - it would also have been difficult to come up a common approach which all .NET languages could live with:

http://www.artima.com/intv/dotnetP.html

Thanks Santosh,

Suppose I have different methods in both class shape1 and Shape2 then it will support?

Thanks
Sandeep

Let me tell you a scenario.

I have a class Shape1

It has CalcualteArea method
Class Shape1
{
     public void CalculateArea()
     {
       //
     }
}

There is another class shape2 that one also has same method 
Class Shape2
{
     public void CalculateArea()
     {
       //
     }
}

Now i have a child class Circle, it derives from both SHape1 and shape2;

public class Circle: Shape1,shape2
{
}


Now when i create object for Circle, and call the method, system doesnt know which calculate area method to be called.. Both has same signatures. So compiler will get confuse .thats why multiple inheritances are not allowed.

But there can be multiple interfaces because interfaces dont ve methjod definition..Even both the interfaces have same method, both of them dont ve any implementation and always method in the child class will be executed..

Guess it would be clear..

Hi Sandeep,

Please refer the below links

http://www.codeproject.com/Articles/10072/Simulated-Multiple-Inheritance-Pattern-for-C

http://www.c-sharpcorner.com/uploadfile/cbreakspear/multipleinheritance11082005004843am/multipleinheritance.aspx

http://kiranpatils.wordpress.com/2008/03/10/why-c-doesn%E2%80%99t-supports-multiple-inheritance/

Thanks
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