ASP NET Core 3.1 Main Method

Whether you’re just starting out or have been administering Azure for a while, this book will help you prepare for your next interview. In this tutorial we’ll go through a simple example of how to implement role based authorization / access control in an ASP.NET Core 3.1 API with C#. The example builds on another tutorial I posted recently which focuses on JWT authentication in ASP.NET Core 3, this version has been extended to include role based authorization / access control on top of the JWT authentication. The ConfigureServices() method of the Startup class configures the services which are required by the application. The Configure() method of the Startup class sets up the pipeline of the application’s request processing. In a later article, we will discuss these two methods in detail.

This is done by allowing users to create and save simple and complex HTTP/s requests, as well as read their responses. Middleware in ASP.NET Core assembled into an application pipeline to handle requests and responses. It includes the core features that are 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 speed up the performance reduces the memory footprint and becomes easy to maintain. The app settings class contains properties defined in the appsettings.json file and is used for accessing application settings via objects that are injected into classes using the ASP.NET Core built in dependency injection (DI) system.

Running the ASP.NET Core 3.1 Role Base Authorization API Locally

Mapping of configuration sections to classes is done in the ConfigureServices method of the Startup.cs file. The below video shows how to download, run and test the API with Postman. It uses the previous (ASP.NET Core 2.2) version of the tutorial but the steps to setup and test are exactly the same with this version.

For example the User Service accesses app settings via an IOptions appSettings object that is injected into the constructor. The GetById(int id) action method contains some extra custom authorization logic which allows admin users to access any user record, but only allows normal users to access their own record. Within the Main() method, on this IHostBuilder object, the Build() method is https://remotemode.net/ called which actually builds a Web Host. Then it hosts our ASP.NET Core Web application within that Web Host. Finally, on the Web Host, it is called the Run() method, which will actually run the Web Application and it starts listening to the incoming HTTP requests. As shown in the below image, the CreateHostBuilder() method returns an object that implements the IHostBuilder interface.

ASP.NET Core Authenticate Model

For full details about the example Blazor application see the post Blazor WebAssembly – Basic HTTP Authentication Tutorial & Example. For full details about the example Angular 8 application asp net razor tutorial see the tutorial Angular 8 – Basic HTTP Authentication Tutorial & Example. Postman is a popular API client that makes it easy for developers to create, share, test and document APIs.

Pranaya Rout has published more than 3,000 articles in his 11-year career. In order to understand the Main method of ASP.NET Core Web application, let’s first create an Empty ASP.NET Core Web application. Extension methods are used to add convenience methods and extra functionality to existing types in C#.

ASP.NET Core Auth Program

Entity classes are used to pass data between different parts of the application (e.g. between services and controllers) and can be used to return http response data from controller action methods. The ASP.NET Core users controller defines and handles all routes / endpoints for the api that relate to users, this includes authentication and standard CRUD operations. Within each route the controller calls the user service to perform the action required, this enables the controller to stay ‘lean’ and completely separated from the business logic and data access code. I chose this approach so any new action methods added to the controller will be secure by default unless explicitly made public. I hardcoded the array of users in the example to keep it focused on basic http authentication, in a production application it is recommended to store user records in a database with hashed passwords. For an extended example that includes support for user registration and stores data with Entity Framework Core check out ASP.NET Core 3.1 – Simple API for Authentication, Registration and User Management.