C# 14, part of the latest .NET 10 release, introduces several new features that make coding in C# more flexible and efficient. These updates aim to simplify common tasks and enhance performance. If you’re familiar with previous versions like C# 12 and C# 13, you’ll find these new tools especially useful for modern development.

Run C# Files Directly Without a Project

One of the biggest changes in C# 14 is the ability to run C# files directly from the command line. Before, you had to create a full project and solution even for simple snippets. This process was more complicated and added unnecessary overhead when testing quick ideas or small scripts.

Now, you can write your code in a single file, such as Demo.cs, which might contain simple commands like printing text or working with dates. To run this file, just use the command “dotnet run Demo.cs” in your console. This feature streamlines testing and makes it faster to experiment with code.

Additionally, you can include references to NuGet packages or SDKs within your file using preprocessor directives. This means you don’t need a project file to access external libraries, making file-based apps more straightforward than ever.

Extension Members Make Your Code More Flexible

Another exciting feature in C# 14 is extension members. This allows developers to add new properties and methods to existing classes, structs, or interfaces without altering their original code. Think of it as giving new abilities to existing types without inheritance or recompile requirements.

Extension methods have been around since C# 3.0, primarily used with LINQ queries to extend collection classes. Now, C# 14 extends this concept further by supporting extension properties, making code cleaner and more expressive. For example, you can add a custom property to a class to fetch a calculated value or perform a common task, all without modifying the original class.

This feature helps improve code readability and reuse. It’s especially useful when working with third-party libraries or legacy code, where you might want to add new functionality without changing existing source files.

Overall, extension members help write more maintainable and elegant code. They enable developers to craft more intuitive APIs and improve the way they work with existing classes and interfaces in their projects.

These updates in C# 14 represent a step forward in making the language more powerful and user-friendly. Whether you’re running simple scripts more efficiently or extending classes with ease, these features are designed to boost productivity and code quality.

Inspired by

• https://www.infoworld.com/article/4131649/the-best-new-features-of-c-14.html

Sources

• microsoft.com
• microsoft.com
• microsoft.com
• github.com
• microsoft.com