Inversion of control is a design pattern that follows the dependency inversion principle of SOLID design. It involves separating high-level policy from low-level details by inverting control of dependencies between components, such that high-level components do not depend on low-level components, but instead rely on abstractions. Common techniques for implementing inversion of control include dependency injection, service locators, events, and delegates.

1. Inversion of
Control

2. What is Inversion of Control
 SOLID
 S – Single-responsiblity principle
 O – Open-closed principle
 L – Liskov substitution principle
 I – Interface segregation principle
 D – Dependency Inversion Principle
 Inversion of Control is a design pattern that follow Dependency Inversion Principle

3. What is Inversion of Control (cont.)

4. How to implement Inversion of Control
 Dependency Injection
 Service Locator
 Events
 Delegates

5. Dependency
Injection

6. Traditional code
 Hard to modify
 Hard to test

7. Types
 Constructor Injection
 Setter Injection
 Interface Injection

8. Constructor injection
Interface

9. Setter injection

10. Interface injection

11. Service Locator

12. What is Service Locator

13. Example