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Overview of the .NET version history

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.NET Framework

  1. .NET Framework 1.0 (2002)

    • Initial release.
    • Introduced the Common Language Runtime (CLR), Base Class Library (BCL), ASP.NET, Windows Forms, and ADO.NET.
    • Support for web services with XML Web Services.

  2. .NET Framework 1.1 (2003)

    • Improved support for mobile applications.
    • Introduced ASP.NET Mobile Controls.
    • Added support for ODBC and Oracle database connections in ADO.NET.

  3. .NET Framework 2.0 (2005)

    • Introduced Generics, ASP.NET 2.0, and new APIs.
    • Introduced the Click Once deployment model.
    • Enhanced support for Windows Forms and new data controls.

  4. .NET Framework 3.0 (2006)

    • Added new components: Windows Presentation Foundation (WPF), Windows Communication Foundation (WCF), Windows Workflow Foundation (WF), and CardSpace.
    • Enhanced the user interface capabilities for desktop applications.

  5. .NET Framework 3.5 (2007)

    • Introduced Language Integrated Query (LINQ) and ASP.NET AJAX.
    • Improved WCF and added new features in WPF and WF.
    • Included new base class library features for data access.

  6. .NET Framework 4.0 (2010)

    • Introduced the Task Parallel Library (TPL) and PLINQ for parallel programming.
    • Enhanced support for dynamic programming (Dynamic Language Runtime).
    • Improved garbage collection and added code contracts.

  7. .NET Framework 4.5 (2012)

    • Introduced async and await keywords for asynchronous programming.
    • Enhanced support for web and cloud applications.
    • Improved performance and security.

  8. .NET Framework 4.5.1 (2013)

    • Added performance improvements and new APIs.
    • Enhanced debugging and diagnostics capabilities.

  9. .NET Framework 4.5.2 (2014)

    • Introduced more performance and reliability enhancements.
    • Support for new APIs for improved web applications.

  10. .NET Framework 4.6 (2015)

    • Introduced RyuJIT, a new Just-In-Time compiler.
    • Added support for .NET Native and improved performance for ASP.NET.

  11. .NET Framework 4.6.1 (2015)

    • Focused on improving stability and reliability.
    • Introduced new APIs and enhanced performance.

  12. .NET Framework 4.6.2 (2016)

    • Improvements in performance and security.
    • Enhanced cryptography support and added new APIs.

  13. .NET Framework 4.7 (2017)

    • Introduced high DPI support, improved WPF, and better .NET Standard support.

  14. .NET Framework 4.7.1 (2017)

    • Focused on performance, reliability, and additional API features.

  15. .NET Framework 4.7.2 (2018)

    • Enhanced security and performance improvements.

  16. .NET Framework 4.8 (2019)

    • Final major release of the .NET Framework.
    • Improved accessibility, performance, and added new APIs.

.NET Core

  1. .NET Core 1.0 (2016)

    • First cross-platform .NET implementation.
    • Modular architecture and open-source.
    • Support for console applications and ASP.NET Core.

  2. .NET Core 1.1 (2016)

    • Added support for additional APIs and platforms.
    • Improved performance and bug fixes.

  3. .NET Core 2.0 (2017)

    • Unified .NET Core and .NET Standard.
    • Introduced new libraries and improved compatibility with .NET Framework.

  4. .NET Core 2.1 (2018)

    • Long-term support (LTS) release.
    • Improved performance and introduced new APIs.

  5. .NET Core 2.2 (2018)

    • Added new features and enhancements but was not an LTS release.

  6. .NET Core 3.0 (2019)

    • Introduced Windows desktop application support (WPF and Windows Forms).
    • Enhanced performance and new language features.

  7. .NET Core 3.1 (2019)

    • LTS release.
    • Continued improvements for desktop and web applications.

.NET 5 and Beyond

  1. .NET 5 (2020)

    • Unified platform bringing together .NET Core and .NET Framework.
    • Introduced new features and performance improvements.
    • Focused on cloud, mobile, and web applications.

  2. .NET 6 (2021)

    • LTS release with improved performance and productivity.
    • Enhanced support for MAUI (Multi-platform App UI) for cross-platform applications.

  3. .NET 7 (2022)

    • Focused on performance, security, and improved cloud-native development features.
    • Continued support for MAUI and improved capabilities for web and API development.

  4. .NET 8 (2023)

    • Expected to build on .NET 7 with additional performance enhancements, new language features, and improved developer experience.

Summary

The .NET ecosystem has evolved significantly over the years, transitioning from the traditional .NET Framework to the cross-platform and modular .NET Core, and ultimately to the unified .NET 5 and beyond. Each iteration has focused on improving performance, security, and developer productivity, catering to a diverse range of application types, including web, desktop, cloud, and mobile.

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