Routing | ASP.NET Core 2 Fundamentals

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ASP.NET Core 2 Fundamentals

By : Gumus, T. S. Ragupathi

2 (1)

ASP.NET Core 2 Fundamentals

2 (1)

By: Gumus, T. S. Ragupathi

Overview of this book

The book sets the stage with an introduction to web applications and helps you build an understanding of the tried-and-true MVC architecture. You learn all about views, from what is the Razor view engine to tagging helpers. You gain insight into what models are, how to bind them, and how to migrate database using the correct model. As you get comfortable with the world of ASP.NET, you learn about validation and routing. You also learn the advanced concepts, such as designing Rest Buy (a RESTful shopping cart application), creating entities for it, and creating EF context and migrations. By the time you are done reading the book, you will be able to optimally use ASP.NET to develop, unit test, and deploy applications like a pro.

Preface

Preface

Who this book is for

What this book covers

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Free Chapter

Setting the Stage

Setting the Stage

Introduction to Web Applications

Introduction to ASP.NET

Summary

Controllers

Controllers

Role of the Controller in ASP.NET MVC Applications

Introduction to Routing

Installing the ASP.NET Core NuGet Package in Your Application

Our First Controller

Adding Views

Adding Models

Passing Data from the Controller to the View

Filters

Summary

Views

Views

The View Engine and the Razor View Engine

Layout

Generating HTML

Partial View

View Components

Tag Helpers

Summary

Models

Models

Introduction to Models

Model Binding

Entity Framework

Using Entity Framework in ASP.NET MVC Applications

Database Migration

Summary

Validation

Validation

Introduction to Validation

Client-Side and Server-Side Validation

Server-Side Validation

Client-Side Validation

Implementation

Summary

Routing

Routing

Convention-Based Routing

Attribute-Based Routing

Route Attribute at the Controller Level

Route Constraints

Summary

Rest Buy

Rest Buy

Designing Rest Buy

Creating the Entities

Create EF Context and Migrations

Summary

Adding Features, Testing, and Deployment

Adding Features, Testing, and Deployment

Adding the Registration Feature

Creating a Unit Test

Upgrading Our Project to Bootstrap 4

Deploying RestBuy to Azure

Summary

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Route Attribute at the Controller Level

You will notice that, with the URL pattern for the action methods, Index and Index2, we repeat the controller name, Home, in both URL patterns, Home and Home/Index3. Instead of repeating the controller method name (or any common part in the URL) at the action method level, we can define it at the controller level.

In the following code, the common part of the URL (Home) is defined at the controller level and the unique part is defined at the action method level. When the URL pattern is getting mapped to the action methods of the controller, both route parts (at the controller level and at the action method level) are merged and matched. So, there will be no difference between the routes defined earlier and those that follow.

If you want any parameters in attribute-based routing, you can pass them within curly brackets. In the following example, we did this for the SayHello action method.

For example, the http://localhost:49831/Home/Index3 URL pattern...

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