✔️ CONSIDER adding a target for net461 when you're offering a netstandard2.0 target. NET implementations increases the *.nupkg size for no benefit. NET Standard assembly will automatically be used by NuGet.
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NET Standard, if your source code is the same for all targets. ❌ AVOID multi-targeting as well as targeting. Allows callers to check without having to catch PlatformNotSupportedException Throw new PlatformNotSupportedException() Public static async Task GetCoordinatesAsync() This project uses multi-targeting to expose device-specific APIs to.
This way, your library can be used anywhere and supports runtime light-up of features. Instead, throw from the implementation and offer capability APIs. NET implementations allows you to call platform-specific APIs that are outside of. Multi-targeting allows you to use conditional compilation in your code and call framework-specific APIs. NET Standard library serves as the fallback library that is used everywhere, except for the cases where your NuGet package offers a framework-specific implementation. Consumers can then reference the same package and NuGet will pick the appropriate implementation. With multi-targeting, all assemblies are packaged inside a single NuGet package.
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NET Standard output plus one or more framework-specific outputs. To shield your consumers from having to build for individual frameworks, you should strive to have a. NET target frameworks rather than for just one. The best way to call framework-specific APIs is using multi-targeting, which builds your project for many. Sometimes you need to access framework-specific APIs from your libraries. App model specific APIs will not be available in. NET Standard target if the library relies on a platform-specific app model.įor example, a UWP control toolkit library depends on an app model that is only available on UWP. NET Standard 2.0 will use the netstandard2.0 target and benefit from having a smaller package graph while older platforms will still work and fall back to using the netstandard1.x target. ✔️ DO include a netstandard2.0 target if you require a netstandard1.x target.Īll platforms supporting. NET Standard 1.x if you specifically need to target an older platform. NET Standard 1.x is distributed as a granular set of NuGet packages, which creates a large package dependency graph and results in developers downloading a lot of packages when building. ❌ AVOID including a netstandard1.x target. Explicitly targeting net5.0 should be added when you want to use new. NET 5 or later apps can use a netstandard2.0 target so net5.0 isn't required. ✔️ DO include a net5.0 target or later if you require new APIs introduced in a modern. NET Standard 2.0.NET Standard 2.0 is supported by all modern platforms and is the recommended way to support multiple platforms with one target.
Most general-purpose libraries should not need APIs outside of. ✔️ DO start with including a netstandard2.0 target. NET team offers a Platform compatibility analyzer to help you discover possible issues. For example, reflection APIs have different performance characteristics when an application uses ahead-of-time compilation on iOS or UWP.
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For example, will succeed on Windows and throw PlatformNotSupportedException when used on any other OS. Platform-specific APIs will fail on other platforms.NET Standard, and successfully compiling your project, doesn't guarantee the library will run successfully on all platforms: It's a single product with a uniform set of capabilities and APIs that can be used for Windows desktop apps and cross-platform console apps, cloud services, and websites.įor more information about how. NET that Microsoft is actively developing. NET Standard, which means it's usable by all platforms that implement that version of. NET Standard lets you produce libraries that are constrained to use APIs that are in a given version of. NET Standard targets are the best way to add cross-platform support to a. NET open-source libraries to support as many developers as possible, whether they're building an ASP.NET website hosted in Azure, or a. NET supports multiple operating systems and devices.
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