This section offers an overview of the Silk Performer .NET Framework and the Silk Performer .NET Add-On for Microsoft Visual Studio .NET. It also serves as an in-depth demonstration of how to execute .NET methods with BDL, how to write complete test drivers in .NET, and how to test drivers in Visual Studio .NET. It explains how to write test code in .NET and customize test code in BDL. Because SOAP (Web services) has become widely accepted, this chapter also explores how Web services can easily be tested using Silk Performer and the .NET Framework.