Razor Pages is a feature of ASP.NET Core that makes coding page-focused scenarios easier and more productive. Razor Pages, like MVC, is built on top of ASP.NET Core's components, benefitting from features such as built-in dependency injection and middleware. Swagger, also known as OpenAPI, is a tool used to describe and document RESTful APIs.

Introduction to Building APIs with ASP.NET Core Razor Page

Razor Pages is a more straightforward way of building page-based application compared to MVC. A Razor Page contains the page markup (Razor) and the code in one file, while MVC separates the Controller from the View.
This integrated approach allows Razor Pages to be more self-contained, enabling each Razor Page to handle its actions without the need for a separate controller. This approach can simplify the development of simple CRUD-based web APIs.

Difference between Razor Page & ASP.NET MVC

ASP.NET Core Razor Pages and ASP.NET Core MVC are two different programming models provided by ASP.NET Core for building web applications. Both are capable of creating complex applications, but they take slightly different approaches.

ASP.NET Core MVC

MVC stands for Model-View-Controller. It's a design pattern that divides an application into three interconnected components:

• Model: Handles data and business logic.
• View: Displays the data to the user.
• Controller: Manages the interaction between the Model and the View.

MVC is a mature and flexible model that is well-suited for large, complex applications where you need full control over your HTML, JavaScript, and CSS. It allows for a clear separation of concerns, which can make it easier to work in teams and maintain code.

ASP.NET Core Razor Pages

Razor Pages is a newer framework for building web applications that was introduced with ASP.NET Core. It's a page-focused model that streamlines the programming model with a simpler way of organizing code.

In Razor Pages, each page is self-contained with its view and code organized together, while in MVC, the controller and views are maintained separately. This makes Razor Pages more straightforward to understand and work with.

When to Use Which

• Use MVC when:
  • You're building a large-scale application with complex business logic.
  • You want to have full control over your application's architecture.
  • Your team is familiar with the MVC pattern.
• Use Razor Pages when:
  • You're building a smaller, simple application or a prototype.
  • You're building an application with many standalone, simple pages.
  • You want to get up and running quickly and don't want to deal with the complexity of MVC.
    

Introduction to Swagger

Swagger (now known as OpenAPI) is a tool that makes building, testing, and documenting APIs much easier. The Swagger specification provides a set of rules to describe RESTful APIs. These descriptions can then be used by the Swagger-UI tool to display the API and Swagger-Codegen to generate clients in various languages.

Demo Project: https://github.com/VortexDang/ASP.NET-with-Swagger

Link: https://swagger.io/tools/swagger-ui/