--- title: Exploring C# 14 Features in ReSharper and Rider 2025.3 description: C# 14 launches with .NET 10, headlined by extension members that enable extension properties, operators, and static members for enhanced flexibility. The... canonical: https://daily.dev/posts/exploring-c-14-features-in-resharper-and-rider-2025-3-rikqyrxhe twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Exploring C# 14 Features in ReSharper and Rider 2025.3 | daily.dev og:description: C# 14 launches with .NET 10, headlined by extension members that enable extension properties, operators, and static members for enhanced flexibility. The... og:url: https://daily.dev/posts/exploring-c-14-features-in-resharper-and-rider-2025-3-rikqyrxhe og:image: https://api.daily.dev/og/posts/rIkqYRXHE.png og:image:alt: Exploring C# 14 Features in ReSharper and Rider 2025.3 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Exploring C# 14 Features in ReSharper and Rider 2025.3 **[Collections](https://daily.dev/sources/collections)** · 1 min read · 1 upvotes · 0 comments ## Summary C# 14 launches with .NET 10, headlined by extension members that enable extension properties, operators, and static members for enhanced flexibility. The release includes productivity features like the `field` keyword for auto-properties, improved `nameof` support for unbound generics, and null-conditional assignment operators. Performance gains come from user-defined compound assignment operators, enhanced JIT compilation, and improved array-span conversions. ReSharper and Rider 2025.3 provide full IDE support with inspections, quick-fixes, and refactorings for all new features. ## Content C# 14 has been released alongside .NET 10, introducing significant new features and performance improvements. The headline feature of this release is the introduction of extension members, which enable developers to declare extension properties, operators, and static members. This feature allows for greater flexibility and backward compatibility when working with existing code. Apart from extension members, C# 14 brings various productivity enhancements. The new `field` keyword allows for easier access to auto-properties, and improved `nameof` support accommodates unbound generic types. Additionally, null-conditional operators have been enhanced to allow assignments, further reducing the risk of null reference exceptions. Performance improvements are also a key part of C# 14. The release introduces user-defined compound assignment operators for more efficient in-place modifications and enhanced Just-In-Time (JIT) compilation. Implicit conversions between arrays and spans, as well as the refined conversion rules for `Span`, contribute to allocation-free APIs and more efficient numeric operations that benefit both framework libraries and applications. Tooling support has also been rolled out, with ReSharper and Rider 2025.3 providing comprehensive support for all new features. Both IDEs offer inspections, quick-fixes, refactorings, and code generation capabilities tailored for C# 14's new features, thus enhancing the development experience with these latest advancements. ## Similar posts on daily.dev - [The best new features of C\# 14](https://daily.dev/posts/the-best-new-features-of-c-14-6gsbbjwv4) · InfoWorld · 46 upvotes · 4 comments --- Tags: [#c#](https://daily.dev/tags/c#), [#devtools](https://daily.dev/tags/devtools), [#jetbrains](https://daily.dev/tags/jetbrains), [#.net](https://daily.dev/tags/.net) [View this post on daily.dev](https://daily.dev/posts/exploring-c-14-features-in-resharper-and-rider-2025-3-rikqyrxhe) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Exploring C# 14 Features in ReSharper and Rider 2025.3","url":"https://daily.dev/posts/exploring-c-14-features-in-resharper-and-rider-2025-3-rikqyrxhe","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/exploring-c-14-features-in-resharper-and-rider-2025-3-rikqyrxhe"},"datePublished":"2025-11-12T19:53:19.739Z","dateModified":"2026-03-15T04:57:49.745Z","description":"C# 14 launches with .NET 10, headlined by extension members that enable extension properties, operators, and static members for enhanced flexibility. 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