Advertisement
Pipe
RSS
.NET Framework .NET C# VB.NET LINQ ASP.NET Web API REST SignalR Windows Forms WPF WCF RabbitMQ PHP SQL Server MySQL PostgreSQL MariaDB SQLite MongoDB ADO.NET ORM Entity Framework Dapper XML JSON HTML5 CSS3 Bootstrap JavaScript jQuery Angular React TypeScript NPM Blazor UI/UX Responsive Web Design Redis Elasticsearch GraphQL Grafana Agile Scrum Kanban Windows Server IIS PowerShell Active Directory TFS Azure Automation Software Reverse Engineering Performance Optimization Git Jira/Confluence CI/CD TeamCity SOLID KISS DRY YAGNI
Always will be ready notify the world about expectations as easy as possible: job change page

MediatR with .NET 6.0

Добавлено: Apr 24, 2022
Автор: HungryWolf
Источник: источник
Просмотров: 772

What is MediatR? Why do we need it? And How to use it?

Mediator Pattern - The mediator pattern ensures that objects do not interact directly instead of through a mediator. It reduces coupling between objects which makes it easy to maintain the code. Mediator pattern unified the service interfaces around a common design, one request in, one response out.

MediatR is a simple, unambitious mediator implementation in .NET.

Let’s now dive deeper into the working of a simple web API with MediatR. Complete code for the same can be found here.

1. Create a new web API project.

OpenAPI support makes it easy to test the API.

2. Create a folder with these three classes.


Solution Hierarchy

2.1 ApiRequestModel: This class represents a request for API.


ApiRequestModel

IRequest<> It represents a request with a response.

2.2 ApiResponseModel : This class represents a response of API.


ApiResponseModel

2.3 ApiHandler: And this class keeps the logical part.


ApiResponseModel

IRequesthandler<> binds request and response with handler class. The logic of API is kept in the Handle method.

3. Now let’s check the controller. I wrote a base controller that would be inherited by other controllers.


ApiControllerBase

ISender is responsible for communication between different mediator-linked objects. It sends a request through a mediator pipeline to be handled by a single handler.

In this code, HomeController is inheriting the base controller. ApiController communicates with ApiHandler based on ApiRequestModel and ApiResponseModel pair.


ApiController

You can test this API using swagger (OpenAPI).

From the above example, you can see a separation of request, response, logic, and communication using MediatR. And if you want to move to CQRS (Command and Query Responsibility Segregation) pattern, the mediator makes the transition seamless.

Похожее
Feb 7, 2021
Author: Manikanta Pattigulla
OverviewValidation is a very crucial part of Web API implementation. Regardless of what kind of Web API you are building, the bottom line is validating a request before processing it. The common thing I will do in validation is null...
Apr 7, 2023
Author: Matt Eland
Exploring nullability improvements in C# and the !, ?, ??, and ??= operators.Null is famously quoted as being the "billion-dollar mistake" due to the quantity of NullReferenceExceptions that we see in code (particularly when just starting out).The prevalence of null...
Jan 16, 2023
C# AngleSharp tutorial shows how to parse HTML in C# with AngleSharp library.The library can also parse SVG, MathML, or XML.AngleSharp GitHub: https://github.com/AngleSharpDocument Object Model (DOM) is a standard tree structure, where each node contains one of the components from...
May 8, 2023
Author: Waqas Ahmed
Dapper is a lightweight ORM (Object-Relational Mapping) framework for .NET Core and is commonly used to query databases in .NET Core applications. Here are some of the advanced features of Dapper in .NET Core: Multi-Mapping: Dapper allows...
Написать сообщение
Почта
Имя
*Сообщение


© 1999–2023 WebDynamics
1980–... Sergey Drozdov
Area of interests: .NET | .NET Core | C# | ASP.NET | Windows Forms | WPF | Windows Phone | HTML5 | CSS3 | jQuery | AJAX | MS SQL Server | Transact-SQL | ADO.NET | Entity Framework | IIS | OOP | OOA | OOD | WCF | WPF | MSMQ | MVC | MVP | MVVM | Design Patterns | Enterprise Architecture | Scrum | Kanban
LinkedIn
Boosty donation
Donate to support the project
GitHub account
GitHub profile