How can we consume an object from dynamic language and expose a class to dynamic languages?

To consume a class created in DLR supported dynamic languages we can use the ‘Dynamic’ keyword. For exposing our classes to DLR aware languages we can use the ‘Expando’ class.

So when you want to consume a class constructed in Python , Ruby , Javascript , COM languages etc we need to use the dynamic object to reference the object. If you want your classes to be consumed by dynamic languages you need to create your class by inheriting the ‘Expando’ class. These classes can then be consumed by the dynamic languages.

For more details please visit below link;
http://www.codeproject.com/Articles/42997/NET-4-0-FAQ-Part-1-The-DLR