Through version 1.6, the .NET Standard included a comparatively small subset of APIs. Questa complessità è evidente nella tabella riportata in precedenza in questo articolo e nelle istruzioni per interpretarla.This complexity is evident in the table shown earlier in this article and the instructions for how to interpret it. Quindi, attendere ancora più a lungo la nuova versione di .NET Standard essere ampiamente supportata. The NETStandard target framework is an abstract set of contracts that must be implemented in a framework. The .NET Standard specification is a standardized set of APIs. La specifica non è singolare, ma un set di API con versione lineare. You can download tooling for .NET Core tools for Visual Studio 2015 if you cannot upgrade to Visual Studio 2017 or a later version. [1] [2] Its code is open source and is available for contribution from volunteers. Here are some problems with .NET Standard that help explain why .NET 5 is the better way to share code across platforms and workloads: .NET Standard was created as an API set that all .NET implementations would have to support, so there was a review process for proposals to add new APIs. Un componente specifico, ad esempio System.Runtime, descrive quanto segue:A given component, like System.Runtime, describes: Vengono forniti elementi derivati per facilitare le operazioni di lettura e abilitare alcuni scenari di sviluppo (ad esempio l'uso di un compilatore).Derivative artifacts are provided to enable more convenient reading and to enable certain developer scenarios (for example, using a compiler). La specifica di .NET Standard è un set standardizzato di API.The .NET Standard specification is a standardized set of APIs. The higher the version, the more APIs are available to your library's code. The goal was to standardize only APIs that could be implemented in all current and future .NET platforms. Immutable: Once shipped, .NET Standard versions are frozen. Она поддерживается реализаторами .NET, в частности корпорацией Майкрософт (для платформ .NET Framework, .NET Core и Mono) и Unity.The specification is maintained by .NET implementors, specifically Microsoft (includes .NET Framework, .NET Core, and Mono) and Unity. Спецификация .NET Standard представляет собой стандартизированный набор API.The .NET Standard specification is a standardized set of APIs. .NET Standard was created as an API set that all .NET implementations would have to support, so there was a review process for proposals to add new APIs. .NET Standard non è specifico di un'implementazione di .NET, né corrisponde allo schema di controllo delle versioni di tali implementazioni. It describes and provides access to the ~40 .NET libraries and associated APIs that define .NET Standard. Se il progetto viene compilato correttamente, ripetere il passaggio 1. Per usare C# 9, ad esempio, è necessario usare .NET 5,0 come destinazione.For example, in order to use C# 9, you need to target .NET 5.0. È consigliabile usare .NET Standard di destinazione negli scenari seguenti: We recommend you target .NET Standard in the following scenarios: Versioni di .NET Standard (interfaccia utente interattiva), Compilazione di una libreria di .NET Standard, Specifica di destinazioni multipiattaforma, Visualizza tutto il feedback nella pagina, scaricare gli strumenti per gli strumenti di .NET Core per Visual studio 2015, download tooling for .NET Core tools for Visual Studio 2015, suffisso che specifica le API specifiche della piattaforma, suffix that specifies platform-specific APIs. Per ulteriori informazioni, vedere Platform Compatibility Analyzer.For more information, see Platform compatibility analyzer. Per i progetti .NET Framework che devono usare tali librerie, è consigliabile aggiornare il progetto per la destinazione .NET Framework 4.7.2 o versione successiva.2 The versions listed here represent the rules that NuGet uses to determine whether a given .NET Standard library is applicable. You can download the NuGet client for Visual Studio 2015 from the NuGet downloads page. There are no breaking changes between versions. The rows represent the different .NET implementations. Non vengono apportate modifiche importanti tra una versione e l'altra. Quando viene eseguito in una piattaforma che non dispone di un'implementazione per una determinata API, si ottengono errori di run-time.When it runs on a platform that doesn't have an implementation for a given API, you get run-time errors. La specifica di .NET Standard è un set standardizzato di API.The .NET Standard specification is a standardized set of APIs. È possibile usare più destinazioni .NET 5,0 e .NET Standard per accedere alle funzionalità più recenti e continuare a usare la libreria per le altre implementazioni di .NET. Nella tabella seguente sono elencate le versioni di implementazione. Le librerie che devono essere eseguite su più implementazioni di .NET devono essere destinate a questo Framework.Libraries that are intended to run on multiple implementations of .NET should target this framework. For example, .NET Framework 4.6 implements .NET Standard 1.3, which means that it exposes all APIs defined in .NET Standard versions 1.0 through 1.3. The .NET Standard is a formal specification of .NET APIs that are intended to be available on all .NET runtimes. 此规范由 .NET 实现者(具体而言,由 Microsoft(包括 .NET Framework、NET Core 和 Mono)和 Unity)进行维护。The specification is maintained by .NET implementors, specifically Microsoft (includes .NET Framework, .NET Core, and Mono) and Unity. La specifica viene gestita dagli implementatori di .NET, in particolare Microsoft (sono inclusi .NET Framework, .NET Core e Mono) e Unity.The specification is maintained by .NET implementors, specifically Microsoft (includes .NET Framework, .NET Core, and Mono) and Unity. The motivation behind the .NET Standard is establishing greater uniformity in the .NET ecosystem. However, you need NuGet client 3.6 or higher installed. Solution in .NET 5: When a feature is implemented, it's already available for every .NET 5 app and library because the code base is shared. You can build .NET Standard Libraries using a combination of the netstandard framework and the NETStandard.Library metapackage. Standard Libraries (including the Base Class Library) are not included in this article. Per ulteriori informazioni, vedere .NET 5 e .NET standard più avanti in questo articolo.For more information, see .NET 5 and .NET Standard later in this article. La directory ref nel repository dotnet/standard definisce le API di .NET Standard.The ref directory in the dotnet/standard repository defines the .NET Standard APIs. .NET 5,0 implementa .NET Standard 2,1 e versioni precedenti..NET 5.0 implements .NET Standard 2.1 and earlier. For more information, see .NET 5 and .NET Standard later in this article. Ad esempio, .NET Framework 4,6 implementa .NET Standard 1,3, il che significa che espone tutte le API definite in .NET Standard versioni da 1,0 a 1,3.For example, .NET Framework 4.6 implements .NET Standard 1.3, which means that it exposes all APIs defined in .NET Standard versions 1.0 through 1.3. No version number equivalents table like the one for .NET Standard is needed. Microsoft .NET è una piattaforma di sviluppo general purpose - ideata e sviluppata da Microsoft - che mette a disposizione varie funzionalità come il supporto per più linguaggi di programmazione (coprendo tutti i paradigmi di programmazione: object oriented, procedurali, funzionali, imperativi, user oriented, ecc. Find the column in that row that indicates your version starting from right to left. The project is primarily developed by Microsoft employees by way of the .NET Foundation, and released under the MIT License. The most common way to target netstandard is by referencing this metapackage. Most widely used libraries will end up multi-targeting for both .NET Standard 2.0 and .NET 5. “For over a decade, NetStandard Inc. has given us dependable service and superior technical expertise. All applications across all .NET platforms can use it. .NET Standard è ancora necessario per le librerie che possono essere usate da più implementazioni di .NET. This complexity is evident in the table shown earlier in this article and the instructions for how to interpret it. Use this when you are building a desktop Windows app or working with ASP.NET 4.5/4.6. For example, in order to use C# 9, you need to target .NET 5.0. Sottocategorie Questa categoria contiene le 7 sottocategorie indicate di seguito, su un totale di 7. Le librerie che devono essere eseguite su più implementazioni di .NET devono essere destinate a questo Framework. A partire da .NET Standard 2.0 è stata introdotta la modalità di compatibilità di .NET Framework.Starting with .NET Standard 2.0, the .NET Framework compatibility mode was introduced. This simplifies the dependency graph for users of your library that run on .NET Standard 2.0 compatible implementations, and it reduces the number of packages they need to download. The alternative to adding System.Data to the standard would be to provide it as a set of NuGet packages that target.NET Standard. Le versioni successive aggiungono nuove API ed ereditano quelle definite dalle versioni precedenti.Subsequent versions add APIs and inherit APIs defined by previous versions. Then you'd wait even longer for the new version of .NET Standard to be widely supported. La specifica di .NET Standard è un set standardizzato di API. NetStandard's Goal is to change your technology. Older versions used a different mapping for .NET Standard 1.5 and higher. Se si stanno compilando librerie riutilizzabili che si prevede di distribuire in NuGet, prendere in considerazione il compromesso tra REACH e il set di funzionalità disponibili. Cella indica la versione, the more APIs are available to other.NET implementations will be no new Standard. Specification of.NET should target this Framework fossero compilate per.NET Standard a... Esiste alcun provisioning stabilito per la rimozione delle API platform you want to target.NET and... 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