Dependency Injection

Question

What is the use of dependency injection in C# ? Please don't provide any links.

Srikanth Reddy · Answer

Pradeep Sahoo Can you provide any situation where we go ahead with DependencyInjection ?

Pradeep Sahoo · Answer

Dependency injection is one of the design principle through which we achieve a loosely coupled systems . A good design is easy to change  provide abstraction .using dependency injection we can inject the lower module code into the higher module . There are three ways we can inject constructor  property and method level .Please read the link below. http://www.c-sharpcorner.com/UploadFilye/ff2f08/dependency-injection-pattern/ To answer your question consider you have wcf service or web api you want to call those in your controller of asp. Net mvc .Instead of creating the instance you should inject them . When wcf contract change your asp.net mvc will not impact . That is called a loosely coupled system