C# Minimal API in .NET 6 with Visual Studio 2022

November 2021 represents significant date for every developer interested in C# and its related tools and technologies.

On November 2021 Microsoft lunched new C# version, version 10, new .NET CORE version, Version 6, new Visual Studio, version 2022, and many more.

One of the greatest changes is lunch of minimal API’s! A new minimal way of writing C# API’s.

This changes everything, from the way of thinking about C# API to its new minimal look and feel.

Lets together get skilled in all of the C# new technologies in a projects in which we will create new .NET 6 minimal API from zero to the end.

We will start with an preexisting regular REST .NET 5 C# web API which we will use for features guidance’s and beside it create new .NET 6 minimal API project which we will compare to the old ways of writing API’s.

I’m Luke, Senior Full Stack Software Engineer and lets together get skills and knowledge for building C# newest minimal API’s.

C#

C# 10 adds the following features and enhancements to the C# language:

• Record structs

• Improvements of structure types

• Interpolated string handlers

• global using directives

• File-scoped namespace declaration

• Extended property patterns

• Improvements on lambda expressions

• Allow const interpolated strings

• Record types can seal ToString()

• Improved definite assignment

• Allow both assignment and declaration in the same deconstruction

• Allow AsyncMethodBuilder attribute on methods

• CallerArgumentExpression attribute

• Enhanced #line pragma

.NET 6

.NET 6 delivers the final parts of the .NET unification plan that started with .NET 5. .NET 6 unifies the SDK, base libraries, and runtime across mobile, desktop, IoT, and cloud apps. In addition to this unification, the .NET 6 ecosystem offers:

• Simplified development: Getting started is easy. New language features in C# 10 reduce the amount of code you need to write. And investments in the web stack and minimal APIs make it easy to quickly write smaller, faster microservices.

• Better performance: .NET 6 is the fastest full stack web framework, which lowers compute costs if you’re running in the cloud.

• Ultimate productivity: .NET 6 and Visual Studio 2022 provide hot reload, new git tooling, intelligent code editing, robust diagnostics and testing tools, and better team collaboration.

.NET 6 will be supported for three years as a long-term support (LTS) release.

Preview features are disabled by default. They are also not supported for use in production and may be removed in a future version. The new RequiresPreviewFeaturesAttribute is used to annotate preview APIs, and a corresponding analyzer alerts you if you’re using these preview APIs.

.NET 6 is supported by Visual Studio 2022 and Visual Studio 2022 for Mac (and later versions).

Visual studio 2022

With Visual Studio 2022, you’ll always get the best-in-class tools and services available for any developer, any app, and any platform. Whether you’re using Visual Studio for the first time or you’ve been using it for years, there’s a lot to like in our newest version!

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