Instead, you must find a way to move forward with new developments NET. While reusing existing pieces tested, working code. You need a way to interoperate with existing code until you have the chance to finally rewrite all of it on. NET. Recipe-style book on the subject only, the code. NET 2.0 Interoperability Recipes Problem-Solution Approach guides Windows developers who are transitioning from native Windows code:. NET managed. Book Explaining new features in NET 2.0 Interop. NET 2005 and VS Covers PInvoke, COM,. And COM + (other books dont cover all three areas) features most of the sample code in C # and VB. NET, and also include some managed C + + / CLI is written by a developer working with first hand experience NET tools will. allows you to interoperate with existing code.