Dependency Injection in ASP.NET Core Controllers and Views

Modern web development requires decoupled, testable, and maintainable code. In ASP.NET Core, managing how your application components interact is crucial for building scalable software. This text-based course guides you through the core principles of dependency injection, showing you exactly how to register and consume services where you need them most. You will start with the absolute fundamentals, learning the core definitions of lifetimes and service registration before moving on to practical implementation. By the end of this course, you will be able to structure your web applications using clean architecture principles that make your codebase easy to maintain and test. What you'll learn: Understand the foundational concepts of dependency injection and service lifetimes in ASP.NET Core; Inject custom services directly into MVC controllers to handle business logic; Resolve services inside Razor views for UI-specific helper tasks; Implement the repository and unit-of-work patterns for clean data access; Register services using modern, minimal hosting APIs and program configurations. We begin with essential architectural terminology and foundational setup, then transition into step-by-step written walkthroughs demonstrating service injection in controllers and views. This course is designed for beginner backend developers and web programmers who understand basic C# and HTML but are new to dependency injection in ASP.NET Core. Start reading today to write cleaner, more professional web applications.