.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.
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.
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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.
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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.
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 need to migrate or update your applications to use .NET SDK 6.
.NET SDK 5 vs .NET SDK 7
.NET SDK 7 is the future version of .NET that is expected to be released in November 2022. It will be an LTS release, which means it will be supported until November 2025. It will have some new features and improvements over .NET SDK 5 and .NET SDK 6, such as C# 10.0, F# 6.0, Visual Basic 17.0, generics improvements, records improvements, pattern matching improvements, nullable reference types improvements, async/await improvements, exception filters improvements, and more.
However, .NET SDK 7 will also have some breaking changes and deprecations that might affect your existing applications. For example, it will drop support for Windows 8.1 and Windows Server 2012 R2. It will also remove some APIs and features that are obsolete or redundant. Therefore, you might need to migrate or update your applications to use .NET SDK 7.
.NET SDK 5 vs .NET Framework
.NET Framework is the original version of .NET that was first released in 2002. It is a Windows-only platform that supports web, desktop, and server applications using C#, F#, or Visual Basic languages. It has many versions from .NET Framework 1.0 to .NET Framework 4.8. The latest version of .NET Framework is .NET Framework 4.8, which was released in April 2019.
.NET Framework has some advantages over .NET SDK 5, such as compatibility with older applications and libraries that use .NET Framework APIs and features. It also has some disadvantages over .NET SDK 5, such as limited cross-platform and open-source support, outdated features and syntax, lower performance and reliability, and less tooling and productivity. Therefore, you might want to migrate or update your applications to use .NET SDK 5.
Conclusion
Summary of the main points
In this article, we have covered the following main points about .NET SDK 5:
.NET SDK 5 is a software development kit that includes everything you need to build and run .NET applications, using command-line tools and any editor.
.NET SDK 5 is the first version of .NET that supports both LTS and STS releases. It is an LTS release, which means it will be supported until November 12, 2024.
.NET SDK 5 is the first version of .NET that unifies the development experience across different platforms and application types. 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.
.NET SDK 5 supports the latest versions of C#, F#, and Visual Basic languages. Each language has its own features and benefits that suit different scenarios and preferences.
.NET SDK 5 offers improved performance and reliability for your applications. It has a faster runtime, a better garbage collector, a more robust exception handling mechanism, and more.
.NET SDK 5 provides enhanced tooling and productivity for your development process. It has a better command-line interface, a better global.json file, a better project file format, and more.
.NET SDK 5 can be compared with other versions of .NET, such as .NET SDK 6, .NET SDK 7, and .NET Framework. Each version has its own advantages and disadvantages that might affect your existing applications.
Call to action and resources
If you are interested in using .NET SDK 5 for your next project, you can download it from the official website or use package managers or dotnet-install scripts to install it on Linux or macOS. You can also update your Visual Studio version to the latest one to get .NET SDK 5.
If you want to learn more about .NET SDK 5 and its features and benefits, you can visit the following resources:
The official documentation, which provides tutorials, guides, samples, references, and more.
The official blog, which provides announcements, updates, tips, tricks, and more.
The official YouTube channel, which provides videos, webinars, demos, interviews, and more.
The official GitHub repository, which provides the source code of .NET and allows you to contribute to its development and improvement.
We hope you enjoyed this article and found it useful. If you have any questions or feedback, please feel free to leave a comment below. Thank you for reading!
FAQs
What is the difference between .NET SDK and .NET Runtime?
The .NET SDK is a software development kit that includes everything you need to build and run .NET applications. The .NET Runtime is a component of the .NET SDK that enables you to run existing web/server applications. You can download the .NET Runtime separately if you only want to run applications without building them.
How do I check which version of .NET SDK I have installed?
You can check which version of .NET SDK you have installed by running the following command in your terminal or command prompt:
dotnet --version
This will display the current version of .NET SDK that is in use by your machine. You can also run the following command to list all the versions of .NET SDK that are installed on your machine:
dotnet --list-sdks
How do I update my existing applications to use .NET SDK 5?
To update your existing applications to use .NET SDK 5, you need to do the following steps:
Download and install .NET SDK 5 from the official website or use package managers or dotnet-install scripts to install it on Linux or macOS. You can also update your Visual Studio version to the latest one to get .NET SDK 5.
Open your project file (.csproj for C#, .fsproj for F#, or .vbproj for Visual Basic) in your editor of choice and change the element to net5.0. For example, net5.0.
Save your project file and rebuild your application using the dotnet build command or your editor of choice.
Test your application and make sure it works as expected. You might need to fix some errors or warnings that might occur due to breaking changes or deprecations in .NET SDK 5.
How do I create a new application using .NET SDK 5?
To create a new application using .NET SDK 5, you need to do the following steps:
Download and install .NET SDK 5 from the official website or use package managers or dotnet-install scripts to install it on Linux or macOS. You can also update your Visual Studio version to the latest one to get .NET SDK 5.
Open your terminal or command prompt and navigate to the folder where you want to create your application.
Run the following command to create a new application using a template of your choice. You can use the dotnet new --list command to see the available templates. For example, to create a console application using C#, you can run:
dotnet new console -lang C#
This will create a folder with the same name as your application and a project file (.csproj for C#, .fsproj for F#, or .vbproj for Visual Basic) and a source code file (Program.cs for C#, Program.fs for F#, or Program.vb for Visual Basic) inside it.
Open your project file and source code file in your editor of choice and start writing your code. You can use the dotnet run command or your editor of choice to run your application.
What are some of the best practices for using .NET SDK 5?
Some of the best practices for using .NET SDK 5 are:
Use the latest version of .NET SDK 5 and keep it updated regularly.
Use the latest version of Visual Studio or Visual Studio Code or any other editor that supports .NET.
Use the latest version of C#, F#, or Visual Basic languages and follow their coding conventions and style guides.
Use the latest version of ASP.NET Core, Entity Framework Core, Blazor, Xamarin, ML.NET, or any other framework or library that is compatible with .NET.
Use the latest version of NuGet packages and keep them updated regularly.
Use the dotnet commands and tools to create, build, run, test, publish, deploy, debug, and more tasks for your applications.
Use the global.json file to specify the .NET SDK version and roll-forward policy for your projects.
Use the SDK-style project file format and avoid unnecessary elements and attributes.
Use 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 features and benefits of .NET SDK 5.
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