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.NET Framework 4.5

.NET Framework 4.5

Welcome to the .NET Framework 4.5. The .NET Framework is a development platform for building apps for Windows, Windows Phone, Windows Server, and Windows Azure. It consists of the common language runtime (CLR) and the .NET Framework class library, which includes classes, interfaces, and value types that support an extensive range of technologies. The .NET Framework provides a managed execution environment, simplified development and deployment, and integration with a variety of programming languages, including Visual Basic and Visual C#.

For a list of .NET Framework core technologies and app platform support, see the roadmap. For download information and links, see Installing the .NET Framework 4.5. For a general introduction to the .NET Framework for both users and developers, see Getting Started. For an introduction to the architecture and key features of the .NET Framework, see the overview.

The documentation for the .NET Framework includes an extensive class library reference, conceptual overviews, step-by-step procedures, and information about samples, compilers, and command-line tools. To locate the information that interests you, see the following list of main topic areas.

In This Section

Getting Started with the .NET Framework: Provides a comprehensive overview of the .NET Framework and links to additional resources.
What's New in the .NET Framework 4.5: Describes key new features and changes in the latest version of the .NET Framework. Includes lists of new and obsolete types and members, and provides a guide for migrating your applications from the previous version of the .NET Framework.
.NET Framework Development Guide: Provides a guide to all key technology areas and tasks for application development, including creating, configuring, debugging, securing, and deploying your application, and information about dynamic programming, interoperability, extensibility, memory management, and threading.
.NET Framework Tools: Describes the tools that help you develop, configure, and deploy applications by using .NET Framework technologies.
.NET Framework Samples: Provides links to the MSDN Code Samples Gallery for sample applications that demonstrate .NET Framework technologies.
.NET Framework Class Library: Supplies syntax, code examples, and related information for each class contained in the .NET Framework namespaces.

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