NET Core Tutorial Creating a Restful Web API

With the ever-growing tech stacks and efficient systems, Rapid Development is crucial for any kind of project. In .NET Core, one of the features that enable rapid development is Entity Framework Core. Since the topic is quite vast, I will split the article into small episodes, so that we get to cover each and every concept.

This is the first tutorial of a series that teaches ASP.NET Core MVC web development with controllers and views. The user service contains methods for authenticating user credentials and returning a JWT token, getting all users in the application and getting a single user by id. ASP.NET Core Data Annotations are used to automatically handle model validation, the attribute sets both the username and password as required fields so if either are missing a validation error message is returned from the api.

Using Newtonsoft.Json In .NET Core 3+ Projects

JSON is the JavaScript Object Notation, which is a text-based format used to interchange and store data. Its format is easy and simple to understand and parse by humans and machines alike. This indicates that the data will be sent ‘as-is’ without any serialization, encryption or encoding, so the data will be sent in the same way they are passed by the client. https://remotemode.net/ These four are the main ones used in most Web APIs, of course there are many more, such as PATCH, OPTIONS and others, you can review and learn more about them in this documentation. In this article I will mainly focus on giving you a quick guide to learn ASP.NET Core Web API. Integration testing is a set of tests against a specific API endpoint.

• In this tutorial we’ll go through a simple example of how to implement custom JWT authentication in an ASP.NET Core 3.1 API with C#.
• We’ve not done anything here just added [httpget(“_url_”) and inside of the function where we were returning the ~/Views/Employee/Index.cshtml already we’ve just explicitly added the path inside the return View().
• It includes the core features that are required to run a basic .NET Core app.

My organization uses Oracle database and I am testing core with System.Data.OracleClient which is Old.Is there ODAC that works with EF? We are migrating API from Core 2.2 to Core 3.1 and we do have only services.mvc() method. In almost all of them I’ve actually tried to keep going with System.Text.Json, but in the existing projects I haven’t had time to switch out things like custom JsonConverters or Newtonsoft.Json specific attributes on my models. In the ASP.NET Core series, we are going to go through a detailed example of how to use .NET Core, Angular, and MySQL for ASP.NET Core web application development.

Further Reading on the Toptal Blog:

If AddDbContext is used, then also ensure that your DbContext type accepts a DbContextOptions object in its constructor and passes it to the base constructor for DbContext. Yes, VS Scaffolding is starting point to work with ASP.NET Core application with database. In upcoming blog I will write about how to use repository pattern and dependency injection to connect with database. I have shared the sample application in this GitHub location. Extract the application, change the connection string in the appsettings.json file that points to your SQL Server, and run the application. The scaffolding engine uses T4 templates to generate code for controller actions and views in their respective folders.

It is an open-source, cross-platform, cloud-optimized web framework that runs on Windows using .NET Framework and .NET Core, and on other platforms using .NET Core. It is a complete rewrite that unites ASP.NET MVC and Web API into a single programming model and removes system-related asp net core 3.1 tutorial dependencies. This helps in deploying applications to non-Windows servers and improves performance. I am going to develop a sample application for inventory management with basic operations. Named instance running on localhost, and just created the “HangfireTest” database.

Adding database context class

I coded everything by hand with slight modifications while following the videos, I used `ASP.NET Core 3.1` and can confirm that all the things work as they should. As of now I covered most of your tutorials throughout the years. Very nice Sir, Would you know if EF supports oracle database?.

• On successful authorization no action is taken and the request is passed through to the controller action method, if authorization fails a 401 Unauthorized response is returned.
• Here I have used LINQ Query Expression method to join Store and Region tables and retrieving the result.
• This means that the server-side code can instantly push content to connected clients.
• With complex requirements, EFCore may have slower performance.
• This is the first tutorial of a series that teaches ASP.NET Core MVC web development with controllers and views.

To give a specific example, let’s take a look at ChangePassword. If the method of a query processor requires input data, then only the required data should be provided. Usually, for each method, a separate query class is created, and in simple cases, it is possible to reuse the query class. It’s a long tutorial because I’ve taken the approach which will enable you to learn how real-world web applications are build and not just the printing Hello World type concept.

Create Your First Application With ASP.NET Core 3.1

Yes, you can work without entity framework to connect database. Without writing a single line of code, we are able to create an application with basic CRUD operations with the help of the scaffolding engine. A new browser tab will open and we’ll be able to see the product listing page. Since there is no product in the inventory, it’s empty.

• The only difference would be we’re selecting the data where LastName contains keyword or FirstName contains keyword or Position contains keyword.
• Right click on the Views/Car folder, and then click on Add and select New Item.
• The No Records appears after a few seconds so do wait otherwise if there is no error in the visual studio then the only way to find the error is by press F12 and under the network tab.
• Toptal also now supports mission-critical Blazor development projects.
• Integration testing is a set of tests against a specific API endpoint.
• Practical systems often use both RAW SQL and Entity Framework Core within the application.