This three-day course covers the essentials of the .NET Framework for programmers who already know the Visual Basic language and the fundamentals of Windows Forms. It is current to .NET 4.5 and Visual Studio 2012. The course focuses on core portions of the .NET Framework that are common across many application areas. The course starts with an introduction to the architecture and key concepts of .NET. It then discusses class libraries, assemblies, versioning, configuration, and deployment, which constitute a major advance in the simplicity and robustness of deploying Windows applications, ending the notorious “DLL hell. The course is practical, with many examples and a case study. The goal is to equip you to begin building significant applications using the .NET Framework.