Chapter 11. Working with Legacy Code

Terms you'll need to understand:

• Managed code

• Platform invoke

• Runtime callable wrapper (RCW)

• Unmanaged code

Techniques you'll need to master:

• Incorporating existing ASP code into ASP.NET applications

• Instantiating and invoking existing COM/COM+ components by creating a runtime callable wrapper (RCW)

• Using platform invoke (PInvoke) to invoke some common Windows API calls

In this chapter, you learn about the tools and techniques necessary to call ActiveX controls, COM components, and Windows API code from the .NET Framework. You also learn how you can migrate an existing ASP application to ASP.NET.