Learn how to build web apps using ASP NET Core 3.1

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. As the dot net core is cross-platform, we can use several types of machines such as Windows, Mac, and Linus to develop dot net applications. ASP.NET Core (.NET) is a free, open-source, and cloud-optimized framework that can run on Windows, Linux, or macOS. The framework is a complete rewrite from scratch in order to make it open-source, modular, and cross-platform. ASP.NET Core is an open source web-development framework for building web apps on the .NET platform.

Note that [BindProperty] allows you to bind properties for HTTP POST requests by default. However, you will have to explicitly opt-in for HTTP GET requests. This can be accomplished by including an optional boolean parameter (SupportsGet) and setting it to True, e.g. In this course you will first learn about the history and basics of ASP.NET Core.

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In the sample project, browsing to the ResourceLists page with the search string “videos” includes any search results that include the term “videos”, as shown in the following screenshot. Page parameters can be included with the @page directive at the top of the page. To indicate that a parameter is optional, you may include a trailing ? You may also couple the parameter names with a data type, e.g. int for integers.

You should have basic knowledge of HTML, CSS, C#, and any Database like SQL Server, MySQL, or Oracle. That does not mean you need to be an expert on these technologies. These ASP.NET Core Tutorials are designed for Beginners as well as Professional Developers who want to learn ASP.NET Core step by step. Here, in these .NET Core Tutorials, we will provide a hands-on approach to the subject with step-by-step program examples that will assist you in learning and putting the acquired knowledge into practice. I get an intellsense error «there is no argument given that corresponds to the required formal parameter ‘httpContextAccessor’ of ‘clsSessionHelper.clsSessionHelper(HttpContextAccessor)’.


Find centralized, trusted content and collaborate around the technologies you use most. This is reflected in the Solution Explorer, where the Dependencies tree may show NewtonsoftJson and/or EF Core packages nested under the NuGet node, if you use them in your project. Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, and staff.

Here you will learn ASP.NET Core basics, ASP.NET Core Razor Pages, ASP.NET Core MVC, ASP.NET Core with Angular, and ASP.NET Core Web API. Parameters defined in the C# code can be used similar to HTML attributes when using the component, including RenderFragments can be used like nested HTML elements. These can be defined in sub-components such as ConfirmDialog.razor and ResourceDetail.razor that are inside the LearningResources.razor component.

ASP.NET Core MVC – Data Passing Techniques

Any changes made to it affect all applications taking a dependency on it. In my 2019 A-Z series, I covered Blazor for ASP .NET Core while it was still experimental. As of ASP .NET Core 3.1, server-side Blazor has now been released, while client-side Blazor (currently in preview) is expected to arrive in May 2020. By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Run the Blazor web app from the NetLearner repo and try using the UI to add, edit and delete items. Make sure you remove the restrictions mentioned in a previous post about NetLearner, which asp net razor tutorial will allow you to register as a new user, log in and perform CRUD operations. To see the code in action, open the solution in Visual Studio 2019 and run the NetLearner.Blazor project.

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