Does C# support multiple inheritance?

Question

A colleague and I are having a bit of an argument over multiple inheritance. I\'m saying it\'s not supported and he\'s saying it is. So, I thought that I\'d ask the brainy

Answer 1

C# does not support multiple inheritance of classes, but you are permitted to inherit/implement any number of interfaces.

This is illegal (B, C, D & E are all classes)

class A : B, C, D, E
{
}

This is legal (IB, IC, ID & IE are all interfaces)

class A : IB, IC, ID, IE
{
}

This is legal (B is a class, IC, ID & IE are interfaces)

class A : B, IC, ID, IE
{
}

Composition over inheritance is a design pattern that seems to be favorable even in languages that support multiple inheritance.