"With C# 14, now you can run a C# file directly from the command line without needing a project or solution file. Until C# 14, we've had to follow a multi-step process to run a minimal .cs file. Not only was this a multi-step process, but it incurred significant additional overhead because you had to create a solution file and a project file to run your application."
"Support for file-based apps is perhaps the most striking new feature in this release of the C# programming language. Even if all you wanted to do was perform a quick calculation or process a piece of data quickly to test your code, you had to create additional files you may not need later. No longer."
C# 14, released with .NET 10 in November, delivers significant enhancements for efficient code development. File-based apps represent a major feature, eliminating the need for project and solution files to run simple C# programs. Developers can now execute .cs files directly from the command line using dotnet run, reducing overhead for quick calculations or testing. Additional improvements include extension members, enhanced nameof functionality, and user-defined compound assignment operators. These features collectively simplify the development workflow and improve code efficiency. Visual Studio 2026 or later is required to work with C# 14 features.
Read at InfoWorld
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