Book Image

ASP.NET Core MVC 2.0 Cookbook

By : Jason De Oliveira, Engin Polat, Stephane Belkheraz
Book Image

ASP.NET Core MVC 2.0 Cookbook

By: Jason De Oliveira, Engin Polat, Stephane Belkheraz

Overview of this book

The ASP.NET Core 2.0 Framework has been designed to meet all the needs of today’s web developers. It provides better control, support for test-driven development, and cleaner code. Moreover, it’s lightweight and allows you to run apps on Windows, OSX and Linux, making it the most popular web framework with modern day developers. This book takes a unique approach to web development, using real-world examples to guide you through problems with ASP.NET Core 2.0 web applications. It covers Visual Studio 2017- and ASP.NET Core 2.0-specifc changes and provides general MVC development recipes. It explores setting up .NET Core, Visual Studio 2017, Node.js modules, and NuGet. Next, it shows you how to work with Inversion of Control data pattern and caching. We explore everyday ASP.NET Core MVC 2.0 patterns and go beyond it into troubleshooting. Finally, we lead you through migrating, hosting, and deploying your code. By the end of the book, you’ll not only have explored every aspect of ASP.NET Core MVC 2.0, you’ll also have a reference you can keep coming back to whenever you need to get the job done.
Table of Contents (26 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Using the life cycles available in ASP.NET Core


In this recipe, we will see an example with all the life cycles available and look at what it involves.

Getting ready

We will see what the differences between all these life cycles are.

How to do it...

  1. First, let's create an interface named IOperation with a getter on a Guid type, and four interfaces that represent a task for each life cycle available:
  1. We will now implement these interfaces in an Operation class:
  1. In the ConfigurationServices method of the Startup.cs class, we manage the lifetime for each interface:
  1. Now, let's create an OperationService class that we will use in an MVC controller and execute in several HTTP requests:
  1. Now, we create the MVC controller and add an Index action to show the value of Guid for each implementation:
  1. Finally, we create the view that shows the result:

How it works...

We can see the different values of Guids.

Request 1 :

Request 2:

The conclusion is the following:

  • Transient: Objects are always different; a new instance...