C# Unity Series (1) Console programs implement interface dependency injection

Little scum · Posted on 2020-7-16 17:04:11

Unity Containers (Unity) are full-featured, extensible dependency injection containers. It helps build loosely coupled applications and provides developers with the following benefits:

Simplified object creation, especially for hierarchical object structures and dependencies
requirements abstraction; This allows developers to specify dependencies in the runtime or configuration and simplifies the management of cross-cutting concerns
Increase flexibility by deferring component configuration to containers
service positioning capabilities; This allows clients to store or cache containers
Instance and type interception
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Start by creating a new csharp-unity-demo console application.

nuget installs 2 packages with the following command:

Login is visible.

Create a new IUser interface and a new User class, the code is as follows:

Login is visible.

Configure the App.config file

Could not load file or assembly 'Microsoft.Practices.Unity.Configuration'
https://www.itsvse.com/thread-9220-1-1.html

Define a Unity node with containers in it, and there can be multiple containers in the collection, as follows:

Login is visible.

The abbreviated configuration is as follows:

Login is visible.

In the Program file entry method, call the GetUserName method of our newly created IUser interface through Unity, the code is as follows:

Login is visible.

The results of the implementation are as follows:

As you can see, every time we use Unity, we instantiate a new User object.

Source code download:The hyperlink login is visible.

[Console Program] C# Unity Series (1) Console programs implement interface dependency injection

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