Multiple Inheritance in C#: What is the purist way of achieving what I am trying to do?

Question

I do understand that there's no multiple inheritence in C#. However, I've run into a situation in which I really wish it existed. I am creating a custom class that requires me to inherit from CLR types and override a few methods. Unfortunately, I am creating several of these which are very similar. In the interest of DRY, I'd really want to move common functionality to a base class, but then I'd need to inherit from 2 classes. I can use interfaces (and infact I am using one right now) but this solves only half the problem as the method implementations still need to be repeated across several custom classes.

What's the purist way of achieving what I am trying to do?

EDIT:

Here's a generic code sample

public class CustomTypeOne : CLRType
{
   public override void Execute(HttpContext context)
   {
        //Some code that's similar across CustomTypeOne, CustomTypeTwo etc
   }

   public void DoStuff()
   {
       //Same for all CustomTypes and can be part of a base class
   }

   //More methods
}

public class CustomTypeTwo : CLRType
{
   public override void Execute(HttpContext context)
   {
        //Some code that's similar across CustomTypeOne, CustomTypeTwo etc
   }

   public void DoStuff()
   {
       //Same for all CustomTypes and can be part of a base class
   }

   //More methods

}

Answer 1

At times where I felt multiple inheritance would save the day, I realized that it really does make implementation and maintainability more challenging. MI effectively merges the public and protected namespace among the inherited classes, which can cause some ambiguity and complexity you don't need.

So, instead of an IS-A relationship, often I'm happier implementing a HAS-A relationship. The classes I would've inherited would instead be data members in the class.