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MS .Net Framework 4.7.1

The Microsoft .NET Framework 4.7.1, released in October 2017, was an in-place update to the .NET Framework 4.7. It continued the trend of incremental improvements, focusing primarily on enhancements for security, performance, and developer productivity, particularly in areas like networking, configuration, and accessibility. While not a revolutionary release in terms of new programming paradigms, it provided important refinements for existing applications and laid groundwork for future developments.

Key Features and Enhancements

.NET Framework 4.7.1 brought several notable improvements:

  • Accessibility Improvements: A major focus was on enhancing accessibility features for applications built with WPF, Windows Forms, and ASP.NET. This included improved support for high contrast modes, Narrator, and other assistive technologies, making applications more usable for a wider audience.
  • Configuration Builders: This new feature provided a modern and flexible way to inject configuration values into app.config and web.config files at runtime. This was particularly useful for cloud environments and DevOps practices, allowing for dynamic configuration without modifying the original configuration files.
  • SHA-2 Support: Enhanced support for SHA-2 hashing algorithms, addressing modern security requirements for cryptography.
  • Networking Enhancements:
    • HTTP Strict Transport Security (HSTS) Support: Enabled web applications to enforce secure (HTTPS) connections.
    • Improved ServicePointManager Default TLS Protocol: Defaulted to stronger TLS protocols for outgoing connections, enhancing security for network communication.
  • Performance and Reliability Improvements: Various under-the-hood optimizations were made to the Common Language Runtime (CLR), garbage collection, and JIT compilation, leading to better application performance and stability.
  • ASP.NET Enhancements:
    • Execution Step Feature: Allowed for more robust error handling and debugging in ASP.NET applications.
    • Output Caching for Web API: Improved performance for Web API applications by enabling output caching.
  • WPF Enhancements:
    • WPF Accessibility Improvements: Continued efforts to make WPF applications more accessible, including better control over focus and keyboard navigation.
    • Improved Touch and Stylus Support: Enhanced responsiveness for touch and pen input.
  • ADO.NET Enhancements:
    • SQL Connectivity Resiliency: Improved connection resiliency for SQL connections, making applications more robust against transient network issues.
  • Support for .NET Standard 2.0: While .NET Framework itself is Windows-specific, 4.7.1’s support for .NET Standard 2.0 was significant. It allowed .NET Framework applications to consume libraries built for .NET Standard, facilitating code sharing with .NET Core applications and promoting a more unified ecosystem.

Advantages

  • Enhanced Security: Improved TLS defaults and SHA-2 support addressed critical security concerns for modern applications.
  • Better Accessibility: The significant focus on accessibility made it easier for developers to create applications that comply with accessibility standards and cater to diverse user needs.
  • Flexible Configuration: Configuration Builders provided a much-needed modern approach to application configuration, especially beneficial for cloud deployments.
  • Improved Performance and Stability: General performance and reliability enhancements benefited all applications running on the framework.
  • Interoperability with .NET Standard: Support for .NET Standard 2.0 was crucial for enabling code sharing and migration paths between .NET Framework and .NET Core.
  • Backward Compatibility: Maintained the strong backward compatibility expected from .NET Framework updates, allowing existing applications to run without major issues.

Disadvantages

  • Still Windows-Specific: Despite .NET Standard support, the .NET Framework 4.7.1 itself remained fundamentally a Windows-only platform, lacking the cross-platform capabilities of .NET Core/.NET.
  • Incremental Update: For developers looking for major new language features or revolutionary architectural shifts, 4.7.1 was an incremental update rather than a groundbreaking one.
  • Installation Size: The full framework continued to be a relatively large installation, which could be a consideration for deployment.
  • Focus on Existing Technologies: While improving existing technologies, it didn’t introduce entirely new UI frameworks or paradigms like some earlier versions did.

Conclusion

Microsoft .NET Framework 4.7.1 was a valuable, albeit incremental, update that brought important enhancements to security, performance, and, most notably, accessibility. The introduction of Configuration Builders provided a modern solution for application configuration, and improved support for .NET Standard 2.0 facilitated a smoother transition towards a unified .NET ecosystem. While it didn’t redefine the development landscape, it provided crucial refinements that ensured applications built on the .NET Framework remained robust, secure, and accessible in an evolving technological environment. It served as a solid, stable platform for Windows desktop and web applications, bridging the gap towards the more cross-platform future of .NET.

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