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README.md
Blazor
An experimental .NET web framework using C#/Razor and HTML that runs in the browser via WebAssembly
Blazor is a .NET web framework that runs in any browser. You author Blazor apps using C#/Razor and HTML.
Blazor uses only the latest web standards. No plugins or transpilation needed. It runs in the browser on a real .NET runtime (Mono) implemented in WebAssembly that executes normal .NET assemblies.
Blazor will have all the features of a modern web framework, including:
- A component model for building composable UI
- Routing
- Layouts
- Forms and validation
- Dependency injection
- JavaScript interop
- Live reloading in the browser during development
- Server-side rendering
- Full .NET debugging both in browsers and in the IDE
- Rich IntelliSense and tooling
- Publishing and app size trimming
Note: Blazor is an experimental project. It's not (yet) a committed product. This is to allow time to fully investigate the technical issues associated with running .NET in the browser and to ensure we can build something that developers love and can be productive with. During this experimental phase, we expect to engage deeply with early Blazor adopters like you to hear your feedback and suggestions.
To see Blazor in action, check out Steve Sanderson's prototype demo at NDC Oslo last year. You can also try out a simple live Blazor app.
Getting Started
- Install the .NET Core 2.1 Preview 1 SDK.
- Install the latest preview of Visual Studio 2017 (15.7) with the Web development workload.
- Install the ASP.NET Core Blazor Language Services extension from the Visual Studio Marketplace.
- File -> New Project -> Web -> ASP.NET Core Web Application -> Blazor
- If you don't see the Blazor template, be sure to select .NET Core and ASP.NET Core 2.0
Not using Visual Studio? Install the Blazor templates on the command-line:
dotnet new -i Microsoft.AspNetCore.Blazor.Templates --nuget-source https://dotnet.myget.org/F/blazor-dev/api/v3/index.json
dotnet new blazor -o BlazorApp1
cd BlazorApp1
dotnet run
Build
Prerequisites:
- Node.js (>8.3)
The build script will acquire the required version of the .NET runtime and .NET SDK on first run.
Run build.cmd or build.sh from the solution directory.
Run unit tests
Run build.cmd /t:Test or build.sh /t:Test
Run end-to-end tests
Prerequisites:
- Install selenium-standalone (requires Java 8 or later)
npm install -g selenium-standaloneselenium-standalone install
- Chrome
Run selenium-standalone start
Run build.cmd /t:Test /p:BlazorAllTests=true or build.sh /t:Test /p:BlazorAllTests=true
Opening in Visual Studio
Prerequisites:
- Visual Studio 2017 15.7 preview 1 (or newer) - download
We recommend getting the preview version of Visual Studio and updating it frequently. The Blazor editing experience in Visual Studio depends on new features of the Razor language tooling and will be updated frequently.
When installing Visual Studio choose the following workloads:
- ASP.NET and Web Development
- Visual Studio extension development features
Developing the Blazor VS Tooling
To do local development of the Blazor tooling experience in VS, select the Microsoft.VisualStudio.BlazorExtension
project and launch the debugger.
The Blazor Visual Studio tooling will build as part of the command line build when on Windows.
Contributing
There are lots of ways that you can contribute to Blazor! Read our contributing guide to learn about our development process and how to propose bug fixes and improvements.