Install the .NET 5.0 SDK and Get Started with C#, F#, or Visual Basic
.NET SDK 5: What You Need to Know
If you are a developer who wants to build modern applications using the latest technologies, you might be interested in learning more about .NET SDK 5. In this article, we will explain what .NET SDK 5 is, why you should use it, how to download and install it, and what features and benefits it offers. We will also compare it with other versions of .NET and provide some useful resources for further learning.
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Introduction
What is .NET SDK 5?
.NET SDK 5 is a software development kit (SDK) that includes everything you need to build and run .NET applications, using command-line tools and any editor (like Visual Studio). It contains the .NET Runtime, which enables you to run existing web/server applications, the ASP.NET Core Runtime, which enables you to run web applications with ASP.NET Core, and the .NET Desktop Runtime, which enables you to run Windows desktop applications. It also includes the compilers, libraries, and tools for developing applications using C#, F#, or Visual Basic languages.
Why use .NET SDK 5?
.NET SDK 5 is the first version of .NET that supports both long-term support (LTS) and standard term support (STS) releases. LTS releases have an extended support period (3 years) and are recommended for applications that need to stay supported on the same version of .NET for longer. STS releases have a shorter support period (18 months) and are recommended for applications that want to try the latest features and a newer release is not available. .NET SDK 5 is an LTS release, which means it will be supported until November 12, 2024.
Another reason to use .NET SDK 5 is that it is the first version of .NET that unifies the development experience across different platforms and application types. With .NET SDK 5, you can use the same tools, languages, and libraries to build web, mobile, desktop, cloud, gaming, IoT, and AI applications for Windows, Linux, macOS, Android, iOS, tvOS, watchOS, WebAssembly, and more.
How to download and install .NET SDK 5?
To download and install .NET SDK 5, you can visit the official website and choose the installer or binary that matches your operating system and architecture. You can also use package managers or dotnet-install scripts to install it on Linux or macOS. For Windows users, you can also download the hosting bundle or the runtime separately if you only want to run applications without building them.
If you have Visual Studio installed on your machine, you can also get .NET SDK 5 by updating your Visual Studio version to the latest one. For Visual Studio 2019 users, you need at least version 16.9 or higher to use .NET SDK 5. For Visual Studio for Mac users, you need at least version 8.10 or higher.
Features and benefits of .NET SDK 5
Cross-platform and open-source development
One of the main features of .NET SDK 5 is that it enables you to develop applications that can run on multiple platforms and devices. You can use the same code base and libraries to target Windows, Linux, macOS, Android, iOS, tvOS, watchOS, WebAssembly, and more. You can also use different development environments and editors to write and debug your code, such as Visual Studio, Visual Studio Code, Visual Studio for Mac, JetBrains Rider, or any other editor that supports .NET.
Another feature of .NET SDK 5 is that it is open-source and community-driven. You can access the source code of .NET on GitHub and contribute to its development and improvement. You can also report issues, request features, or join discussions with other developers and the .NET team. You can also use the many open-source libraries and frameworks that are compatible with .NET, such as ASP.NET Core, Entity Framework Core, Blazor, Xamarin, ML.NET, and more.
Support for C# 9.0, F# 5.0, and Visual Basic 16.0
.NET SDK 5 also supports the latest versions of the three main languages that you can use to develop .NET applications: C#, F#, and Visual Basic. Each language has its own features and benefits that suit different scenarios and preferences.
C# 9.0 is the latest version of the popular object-oriented and multi-paradigm language that offers a rich set of features and syntax. Some of the new features in C# 9.0 are records, init-only properties, top-level statements, pattern matching enhancements, target-typed new expressions, and more. These features aim to make C# code more concise, expressive, and immutable.
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F# 5.0 is the latest version of the functional-first and cross-platform language that emphasizes simplicity, correctness, and performance. Some of the new features in F# 5.0 are string interpolation, nameof expressions, open type declarations, enhanced slicing, task expressions, and more. These features aim to make F# code more readable, interoperable, and asynchronous.
Visual Basic 16.0 is the latest version of the easy-to-learn and productive language that follows the Visual Basic .NET specification. Some of the new features in Visual Basic 16.0 are nullable reference types, implicit object creation expressions, lambda method expressions, partial methods with parameters and return values, and more. These features aim to make Visual Basic code more robust, modern, and consistent.
Improved performance and reliability
.NET SDK 5 also offers improved performance and reliability for your applications. It has a faster runtime that can execute your code more efficiently and use less memory and CPU resources. It also has a better garbage collector that can manage your memory allocation and deallocation more effectively and reduce pauses and fragmentation. It also has a more robust exception handling mechanism that can handle errors more gracefully and prevent crashes.
Some of the performance improvements in .NET SDK 5 are faster JSON serialization/deserialization, faster regular expressions, faster HTTP/2 support, faster startup time, faster code generation, faster math operations, faster networking operations, faster collections operations, faster string operations, faster Span operations, faster LINQ operations, faster DateTime operations, faster cryptography operations, faster reflection operations, faster diagnostics operations, and more.
Enhanced tooling and productivity
.NET SDK 5 also provides enhanced tooling and productivity for your development process. It has a better command-line interface (CLI) that allows you to create, build, run, test, publish, deploy, debug, and more tasks using dotnet commands. It also has a better global.json file that allows you to specify the .NET SDK version and roll-forward policy for your projects. It also has a better project file format that uses the SDK-style format, which is simpler, cleaner, and more flexible than the old format.
Some of the productivity improvements in .NET SDK 5 are single file applications, self-contained applications, trimmed applications, ready-to-run images, source generators, analyzers, code fixes, refactoring, code completion, code navigation, code formatting, code testing, code debugging, code publishing, code deploying, and more.
Comparison of .NET SDK 5 with other versions
.NET SDK 5 vs .NET SDK 6
.NET SDK 6 is the next version of .NET that is expected to be released in November 2021. It will be an STS release, which means it will be supported until May 2023. It will have some new features and improvements over .NET SDK 5, such as minimal APIs, hot reload, faster build times, improved Blazor performance and capabilities, improved MAUI support, improved gRPC support, improved Azure support, improved Windows Forms and WPF support, and more.
However, .NET SDK 6 will also have some breaking changes and deprecations that might affect your existing applications. For example, it will drop support for Windows 7 and Windows Server 2008 R2. It will also remove some APIs and features that are obsolete or redundant. Therefore, you might