Blazor sample apps

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NET allows you to build high-performance, cross-platform web applications. Patterns like MVC and built-in support for Dependency Injection allow you to build applications that are easier to test and maintain. This guide provides end-to-end guidance on building monolithic web applications using ASP. NET Core and Azure. Download PDF. Looking for the e-book in another format?

View on the web. NET Core and Azure e-book implemented in a sample application.

Syncfusion Blazor Components - Demos and Showcase Web Apps

Explore Sample App on GitHub. This free e-book introduces ASP. It introduces Blazor concepts in parallel with analogous concepts in ASP. NET Web Forms.

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In this short guide, explore Microsoft Azure services for a variety of. NET application scenarios. Quickly learn about the services that are right for you. This guide introduces the basic concepts of building a development lifecycle around Azure using.

NET tools and processes. After finishing this guide you'll have the knowledge needed to build a mature DevOps toolchain. Download PDF View on the web.

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Learn how to move your existing. NET Framework server applications directly to the cloud by modernizing specific areas, without re-architecting or recoding entire applications. Our step-by-step tutorial will help you get ASP.

NET running on your computer. Get Started. This site uses cookies for analytics, personalized content and ads. By continuing to browse this site, you agree to this use.By Daniel Roth and Luke Latham.

Blazor Server is supported in ASP. NET Core 3. NET and web development workload. NET Core Blazor hosting models. Provide a project name in the Project name field or accept the default project name. Confirm the Location entry is correct or provide a location for the project.

Select Create. For a Blazor Server experience Visual Studio Install the. Optionally install the Blazor WebAssembly preview template by running the following command:.

Confirm the installed. Install Visual Studio Code. The IDE requests that you add assets to build and debug the project. Select Yes. With Blazor WebAssembly, start the app using the. For more information, see Debug ASP.

What is Blazor? A Tutorial on Building Web Apps with Authentication

Blazor Server is supported in Visual Studio for Mac. Blazor WebAssembly isn't supported at this time. Install Visual Studio for Mac.

Build a To-Do app using C# and Blazor

Set the Target Framework to. In the Project Name field, name the app WebApplication1. Run the app with Start Debugging to run the app with the debugger. On the Counter page, select the Click me button to increment the counter without a page refresh.It will also show you how to integrate your Blazor application with Auth0 in order to secure it.

Following the steps described in this tutorial, you will end up building two versions of a simple Web application. You can find the full code in this GitHub repository.

blazor sample apps

Blazor has been gaining in popularity lately, especially after the release of. NET Core 3. There is great interest around it and Microsoft is betting a lot on its future. But what is Blazor exactly? Blazor is a programming framework to build client-side Web applications with. It allows. Developing client-side applications with Blazor brings a few benefits to. NET developers:. In a nutshell, Blazor promises. NET developers to let them build client Web applications with the development platform they are comfortable with.

These are called hosting models.

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NET Core application. The UI is sent to the browser, but UI updates and event handling are performed on the server side. This is similar to traditional Web applications, but the communication between the client side and the server side happens over a SignalR connection. The following picture gives you an idea of the overall architecture of the Blazor Server hosting model:. The Blazor Server hosting model provides a few benefits, such as a smaller download size of the client app and the compatibility with not recent browsers.

However, it has some drawbacks, like a higher latency due to the roundtrip between the client and the server for most user interactions and the challenging scalability in high traffic scenarios.One of my secret dreams is coming true: we will soon be able to write C code and have it run in the browser! This is due to a formerly-experimental, but now officially supported! In this tutorial, we'll learn what Blazor is, and build a sample app to demonstrate how to use it.

I swear this is not a dream. Let's get going! Blazor is an web framework that, in short, allows you to write C and HTML to create client-side single-page applications.

blazor sample apps

In practice, it looks very similar to Razor Pages applications. The written C is then compiled down to a standard called WebAssemblywhich allows for use on all modern browsers. In theory, we are now able to create client-side applications using C and.

NET Core. When I started writing this post, Blazor was an experimental framework. It was only recently 18 April that Microsoft announced that it will be an officially supported framework in. NET Core in the future. As someone who's been interested in client-side applications for a long time but really doesn't like JavaScript, I cannot tell you how excited I am by this development. You must be running Visual Studio in order to develop a Blazor app, but there's also other things we must included.

NET Core 2. Microsoft has already written up a nice set of instructions on how to do this, and it is over on the Microsoft Docs site. Follow the steps in "prerequisites" and then come back here. Our demo sounds an awful lot like something on that site, but it isn't quite the same. As I do with most of my code-focused posts, I created a sample application that is hosted over on GitHub and demonstrates the code in this post.

Check it out! This is a fully client-side application, running from C code that has been transpiled to Web Assembly. If you try switching to the Counter or Fetch Data example pages, you'll see how snappy it is, and how nice it feels to navigate around it. But we didn't come here to see the sample app that Visual Studio can generate for us.

We came here to build our own page. Let's do that. We're going to add a new page to this sample project and make it a very simple To-Do list. To do that, we're going to need three parts. The first one is the easiest. Let's add a new JSON file called todoitems. The file looks like this:. Note: we are using GUIDs for the ID field because it makes it much easier to generate new ones, since we don't have a database and partially because I'm lazy.

Now we need a ToDo.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

Now upgraded for. NET core 3. This application demonstrates the use of SignalR to create a Blazor chat application. The app now uses the Microsoft. This really simplifies the ChatClient code.

The disconnect bug in the mono implementation of WebSockets has now been fixed. When a client disconnects it correctly disposes and the event reflects in the other clients "xxxx has left the chat". If you want to see how the JavaScript client version worked, I've retained it in this branch.

Shared project. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. A sample Blazor chat application using SignalR. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit 7de Mar 27, Blazor Chat Sample Now upgraded for. Now JavaScript-Free! Known Issues The disconnect bug in the mono implementation of WebSockets has now been fixed.

If you want to see how the JavaScript client version worked, I've retained it in this branch The. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Console app sample. Mar 27, Fix console app - should be. Upgraded to preview 2 - fixes Mar 11, Fixed naming of console app folder. Jul 9, Remove global.By Daniel Roth and Luke Latham.

Blazor apps are based on components. A component in Blazor is an element of UI, such as a page, dialog, or data entry form. The component class is usually written in the form of a Razor markup page with a. Components in Blazor are formally referred to as Razor components. The following Razor markup demonstrates a component Dialog. The dialog's body content ChildContent and title Title are provided by the component that uses this component in its UI.

OnYes is a C method triggered by the button's onclick event. HTML elements specify components, and a tag's attributes pass values to a component's properties.

In the following example, the Index component uses the Dialog component. When this component is used in the app, IntelliSense in Visual Studio and Visual Studio Code speeds development with syntax and parameter completion.

Components render into an in-memory representation of the browser's Document Object Model DOM called a render treewhich is used to update the UI in a flexible and efficient way.

Blazor Server is supported in ASP. NET Core 3. Blazor WebAssembly is a single-page app framework for building interactive client-side web apps with.

Blazor WebAssembly uses open web standards without plugins or code transpilation and works in all modern web browsers, including mobile browsers. NET code inside web browsers is made possible by WebAssembly abbreviated wasm. WebAssembly is a compact bytecode format optimized for fast download and maximum execution speed. WebAssembly is an open web standard and supported in web browsers without plugins. WebAssembly code can access the full functionality of the browser via JavaScript, called JavaScript interoperability or JavaScript interop.

NET code executed via WebAssembly in the browser runs in the browser's JavaScript sandbox with the protections that the sandbox provides against malicious actions on the client machine.

The size of the published app, its payload sizeis a critical performance factor for an app's useability. A large app takes a relatively long time to download to a browser, which diminishes the user experience.

Blazor WebAssembly optimizes payload size to reduce download times:. Blazor decouples component rendering logic from how UI updates are applied.

NET Core app. UI updates are handled over a SignalR connection. The runtime handles sending UI events from the browser to the server and applies UI updates sent by the server back to the browser after running the components.

blazor sample apps

The connection used by Blazor Server to communicate with the browser is also used to handle JavaScript interop calls.By Daniel Roth and Luke Latham. Blazor Server is supported in ASP. NET Core 3. Follow the guidance in the Get started with ASP.

ASP.NET Core Blazor templates

Name the project ToDoList. Browse to each of the app's three pages in the Pages folder: Home, Counter, and Fetch data. These pages are implemented by the Razor component files Index. On the Counter page, select the Click me button to increment the counter without a page refresh. Incrementing a counter in a webpage normally requires writing JavaScript. With Blazor, you can write C instead. Examine the implementation of the Counter component in the Counter.

Dynamic rendering logic for example, loops, conditionals, expressions is added using an embedded C syntax called Razor. The name of the generated. NET class matches the file name. Members of the component class are defined in an code block. In the code block, component state properties, fields and methods are specified for event handling or for defining other component logic. These members are then used as part of the component's rendering logic and for handling events.

Modify the C logic of the Counter component to make the count increment by two instead of one. Rebuild and run the app to see the changes.

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Select the Click me button. The counter increments by two.

blazor sample apps

Components can also have parameters. Component parameters are defined using public properties on the component class with the [Parameter] attribute. Use attributes to specify arguments for a component in markup. Set the value to increment the counter by ten. Reload the Index component. The counter increments by ten each time the Click me button is selected.

The counter in the Counter component continues to increment by one. The page directive at the top of the Counter. Without the page directive, a component doesn't handle routed requests, but the component can still be used by other components. An instance of the service is available throughout the app via dependency injection DI :. The inject directive is used to inject the instance of the WeatherForecastService service into the FetchData component.

The FetchData component uses the injected service, as ForecastServiceto retrieve an array of WeatherForecast objects:. If working with a Blazor WebAssembly app, HttpClient is injected to obtain weather forecast data from the weather.


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