Dependency Inversion Principle in C# with a real-time example. Details should depend on abstractions". The principle says that high-level modules should depend on abstraction, not on the details, of low level modules, in other words not the implementation of the low level module. Dependency inversion principle is one of the principles on which most of the design patterns are build upon. Please read our previous article before proceeding to this article where we discussed the Interface Segregation Principle in C# with a real-time example. High-level modules should not depend on low-level modules. In this article, we will see an example code with the flaw & correct it with help of DIP. Dependency inversion principle is a software design principle which provides us the guidelines to write loosely coupled classes. Dependency Inversion Principle (DIP) is a software desing principle which states that "High-level modules should not depend on low-level modules. In other words, Notification is depending on the concrete implementation of both Email and SMS, not an abstraction of said implementation. In this article, I am going to discuss the Dependency Inversion Principle in C# with a real-time example. Dependency inversion talks about the coupling between the different classes or modules. Details should depend upon abstractions.What does this definition mean? operations in our application that has more abstract nature and contain more complex logic Let's imagine that we are building an notifications client (a trite example, I know, but bear with me). Abstractions should not depend upon details. Both should depend on abstractions. It focuses on the approach where the higher classes are not dependent on the lower classes instead depend upon the abstraction of the lower classes. SOLID Design Principles Explained: Dependency Inversion Principle with Code Examples Thorben Janssen May 7, 2018 Developer Tips, Tricks & Resources The SOLID design principles were promoted by Robert C. Martin and are some of the best-known design principles in object-oriented software development. Before going ahead we should know why do we … The Dependency Inversion Principle is one of the SOLID principles defined by Robert C. Martin.This principle is about dependencies among the components (such as two modules, two classes) of the software. This design principle ensures a lower coupling between different classes. Here are some sample classes: Notice that the Notification class, a higher-level class, has a dependency on both the Email class and the SMS class, which are lower-level classes. Both should depend on abstractions And Abstractions should not depend on details. We want to be able send both email and SMS text notifications. 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