C# .NET MAUI MVVM Course (Android, iPhone, Windows Machine, MAC OS)

.NET MAUI란?

• Multi-platform App UI: Develop Android, iOS, macOS (Mac Catalyst), Windows apps simultaneously with a single C#/.NET codebase and XAML.

• The next generation of Xamarin.Forms, using a handler architecture instead of renderers to improve performance and customization.

• Single Project structure (centralized management of shared assets and resources), hot reload, built-in DI, Essentials (device API) integration.

What is the MVVM pattern?

MVVM (Model–View–ViewModel) is an architectural pattern that connects the UI (View) and data/logic (Model) through a ViewModel.

• Model

  • Actual data, business logic, API call results, DB entities, etc.

  • 예: BookItem { Title, Link }

• View (XAML, Code-Behind)

  • The layer that defines the UI.

  • ViewModel properties and commands Binding.

  • Minimize code logic (business) as much as possible → Only responsible for UI rendering.

• ViewModel

  • A medium that connects View and Model.

  • Automatically reflect data changes to the View using ObservableObject, INotifyPropertyChanged, ICommand, etc.

  • Process user actions (button clicks, list selections, etc.) as Commands.

  • Responsible for UI logic (preparing data to display on screen, state management).

Advantages of MVVM

1. Separation of UI and Logic → Easy testing and maintenance

2. Reusability → ViewModel can be utilized in other Views as well

3. Easy to test → ViewModel has no UI-dependent code, making unit testing possible

4. Clear data flow → View ↔ ViewModel ↔ Model structure is clean

This course teaches you how to practically apply the MVVM (Model–View–ViewModel) pattern while developing cross-platform apps using .NET MAUI.
The goal is to separate UI and business logic, understand data binding and command structures, and design app architecture with excellent maintainability and scalability.