netcoreapp31

netcoreapp31 refers to the .NET Core 3.1 platform. It is a free and open-source managed runtime and framework that supports application development across multiple operating systems. .NET Core 3.1 was a significant release in the .NET Core lineage, introducing several key features and improvements. It enabled developers to build various types of applications, including web applications, APIs, desktop applications (with WPF and Windows Forms on Windows), and cloud-native services.

A notable aspect of .NET Core 3.1 was its support for C# 8.0, which brought features like nullable reference types, pattern matching improvements, and default interface methods. The release also included performance enhancements and updates to the .NET SDK and runtime. It was a Long-Term Support (LTS) release, meaning it received extended support and servicing from Microsoft, making it a stable choice for production environments.

Key advancements in .NET Core 3.1 included the introduction of Blazor for building interactive client-side web UI with .NET, improved support for containerization with Docker, and enhanced networking capabilities. It continued the trend of .NET moving towards a unified platform, paving the way for .NET 5 and subsequent releases. While .NET Core 3.1 is now out of support, it played a crucial role in the evolution of the .NET ecosystem.