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Every call to an event handler from an HTML element (e.g. OnClick event for an input button) can be bound to a C# method to handle that event. The StateHasChanged() method can be called manually to rerender the component, e.g. when an item is added/edited/deleted in the UI. In addition to server-side Blazor (released in late 2019 with .NET Core 3.1), you can also host Blazor apps on the client-side from within an ASP .NET Core web app. Client-side Blazor is currently in preview and is expected in a May 2020 release.

Note that [BindProperty] allows you to bind properties for HTTP POST requests by default. This can be accomplished by including an optional boolean parameter (SupportsGet) and setting it to True, e.g. These methods can be overridden and defined in the @code section (formerly @functions section) of a .razor page, e.g. To see the code in action, open the solution in Visual Studio 2019 and run the NetLearner.Blazor project.

ASP.NET Core MVC – Views

The App component is defined in App.razor, at the root of the Blazor web app project. This App component contains nested authentication-enabled components, that make use of the MainLayout to display the single-page web application in a browser. If the user-requested routedata is found, the requested page (or root page) is displayed.

Your Razor Pages may coexist along with a backend Web API and/or traditional MVC views backed by controllers. Razor Pages are typically backed by a corresponding .cs class file, which represents a Model for the Page with Model Properties and Action Methods that represent HTTP Verbs. You can even use your Razor knowledge to work on Blazor fullstack web development.

ASP.NET Core – Introduction & Environment Setup

This is the second of a new series of posts on ASP .NET Core 3.1 for 2020. In this series, we’ll cover 26 topics over a span of 26 weeks from January through June 2020, titled ASP .NET Core A-Z! To differentiate from the 2019 series, the 2020 series will mostly focus on a growing single codebase (NetLearner!) instead of new unrelated code snippets week. A new major release of .NET is published every year in November, enabling developers, the community, and businesses to plan their roadmaps.

Even numbered releases are LTS releases with free support and patches for three years. Odd-numbered releases are STS releases with free support and patches for 18 months. Microsoft continued encouraging developers to migrate from .NET Framework to .NET Core and the subsequent .NET 5+ versions to take advantage of the benefits mentioned above. You will also learn how to build a book list application using ASP.NET MVC and see how to use DataTables with API Calls in a Razor Project.

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Note that the Configure() method takes in an app object of type IApplicationBuilder, similar to the IApplicationBuilder we see in regular ASP .NET Core web apps. A call to MapFallBackToPage() razor engine .net core indicates the “/_Host” root page, which is defined in the _Host.cshtml page in the Pages subfolder. In my 2019 A-Z series, I covered Blazor for ASP .NET Core while it was still experimental.

If the user-requested routedata is invalid (not found), it displays a “sorry” message to the end user. It was designed to build modern, high-performance, and scalable applications that could run on Windows, macOS, and Linux. It includes the core features required to run a basic .NET Core app. Other features are provided as NuGet Packages, which you can add to your application as needed. In this way, the .NET Core application speeds up the performance, reduces the memory footprint, and becomes easy to maintain. Built on top of MVC in ASP .NET Core, Razor Pages allows you to simplify the way you organize and code your web apps.