I’m thrilled to announce that Blazor WebAssembly is now officially released. This is a fully-featured and supported release of Blazor WebAssembly that is ready for production use. Full stack web development with .NET is now here!
Getting started with Blazor WebAssembly is easy: simply go to https://blazor.net and install the latest .NET Core SDK (3.1.300 or later), which includes everything you need to build and run Blazor WebAssembly apps.
You can then create and run your first Blazor WebAssembly app by running:
dotnet new blazorwasm -o BlazorApp1 cd BlazorApp1 dotnet run
Browse to https://localhost:5001 and voilà! You’ve just built and run your first Blazor WebAssembly app!
To maximize your Blazor productivity, be sure to install a supported version of Visual Studio for your platform of choice:
Windows: Visual Studio 2019 16.6
macOS: Visual Studio for Mac 8.6
You can find additional docs and samples on https://blazor.net.
Upgrade an existing project
If you already have an existing Blazor WebAssembly project, you can upgrade it from the 3.2.0 Release Candidate to the official 3.2.0 release by doing the following:
Update all Microsoft.AspNetCore.Components.WebAssembly.* and System.Net.Http.Json package references to version 3.2.0.
That’s it, you’re all set!
What is Blazor WebAssembly?
In case this is your first time learning about Blazor, let me introduce you to what Blazor WebAssembly is all about.
Blazor components can then be hosted in different ways to create your web app. The first supported way is called Blazor Server. In a Blazor Server app, the components run on the server using .NET Core. All UI interactions and updates are handled using a real-time WebSocket connection with the browser. Blazor Server apps are fast to load and simple to implement. Support for Blazor Server is available with .NET Core 3.1 LTS.
Blazor WebAssembly comes packed with features to keep you productive on your next web app project:
Leverage the productivity of C# and strong runtime typing.
Build on the stable and mature .NET ecosystem.
Easily reuse code and existing .NET Standard libraries on the client and server.
Shared component model with Blazor Server apps.
Deploy your app as a standalone static site, or hosted with ASP.NET Core.
Build Progressive Web Apps (PWA) with offline capabilities and native OS integration.
Built-in support for authentication.
Integrated globalization & localization support.
Full stack debugging.
Great tooling with Visual Studio, Visual Studio for Mac, and Visual Studio Code.
Blazor in action
Blazor WebAssembly has everything you need to build fully-featured production web apps. To see all these Blazor WebAssembly features in action, checkout Steve Sanderson’s on-demand BUILD session (link should be live after 12pm PT): Modern Web UI with Blazor WebAssembly.
Of course, any web app is going to need beautiful and feature rich components. A variety of Blazor UI components are available from our fantastic partners that work great in any Blazor app, including Blazor WebAssembly apps:
Blazor also has a thriving open-source community and ecosystem. Members of the community, (folks just like you!) have built lots of great component libraries, interop libraries, test frameworks, and more, and then made them freely available for you to use. Some great examples include:
You can find these community projects and many others listed on the Awesome Blazor GitHub repo.
LTS or Current?
Blazor WebAssembly 3.2.0 is a fully supported release under the .NET Core Support Policy. Since this is the first release of Blazor WebAssembly, it is a Current release, not an LTS release; it does not the inherit LTS status of .NET Core 3.1. This means that once Blazor WebAssembly ships with .NET 5 later this year, you will need to upgrade to .NET 5 to stay in support. We expect Blazor in .NET 5 to be a highly compatible release.
Now that we have shipped Blazor WebAssembly, we are shifting our attention to .NET 5. Work has already started on making Blazor WebAssembly available with .NET 5, which we expect to complete for preview next month.
We also have a number of Blazor features and improvements that we are investigating for the .NET 5 & 6 wave. You can see the list of core deliverables that we are considering in the Blazor Roadmap for .NET 5 issue on GitHub. Please note that we consider this list to be highly aspirational. While we hope to deliver all of the improvements listed, there are still many unknown and plans will certainly change as we go. We also expect that there will be plenty of smaller improvements that we will deliver as well.
We are also continuing to collaborate with our friends on the Xamarin team on experimental support for building native UI using Blazor through the Mobile Blazor Bindings project. This includes some early efforts to explore building hybrid UI for native apps, which we hope to share more about soon.
We sincerely appreciate all the enthusiastic support we have received from the Blazor community as we’ve worked to make the release a reality. The number of Blazor articles, blog posts, docs, sample apps, libraries, books, videos, presentations, workshops, courses, meetups, feature suggestions, and feedback issues that have been contributed by the community to the Blazor ecosystem even while it was still in preview has been truly outstanding. To everyone who helped make this release possible, thank you! We couldn’t have done it without you.
Try Blazor today
We hope you enjoy this release of Blazor WebAssembly. Give Blazor a try today by going to https://blazor.net. We look forward to seeing what you create with it.