dotNET基础知识

.NET Framework

• .NET Framework is a development platform that includes a Common Language Runtime (CLR), which manages the execution of code, and a Base Class Library (BCL), which provides a rich library of classes to build applications from
• Since .NET Framework 4.5.2 it has been an official component of the Windows operating system

.NET Core & .NET 5

• a crossplatform implementation of the CLR known as CoreCLR and a streamlined library of classes known as CoreFX -> .NET Core
• .NET Core has been renamed .NET since .NET 5
• 跳过版本4是为了避免与.NET Framework混淆

.NET Runtime & .NET SKD

dotnet --list-sdks
dotnet --list-runtimes

dotnet-core-uninstall --all-previews-but-latest --sdk

• .NET Runtime versioning follows semantic versioning
• major increment indicates breaking changes
• minor increments indicate new features
• patch increments indicate bug fixes
• .NET SDK versioning does not follow semantic versioning
• The major and minor version numbers are tied to the runtime version it is matched with.
• The patch number follows a convention that indicates the major and minor version of the SDK.

ASP.NET Core

ASP.NET MVC and ASP.NET Web API.

These two technologies have been refactored and combined into a platform that runs on .NET 5, named ASP.NET Core

.NET Standard

2021年十一月以前, .NET有三大平台

• .NET Core: for cross-platform and new apps
• .NET Framework: for legacy apps
• Xamarin: for mobile apps

.NET Standard: a specification for a set of APIs that all .NET platforms could implement to indicate what level of compatibility they have.

.NET Standard is just a standard like HTML 5

2021年11月.NET 6发布后,三大平台将被统一为.NET平台

CLI

dotnet --version

dotnet new console
dotnet run