A practical guide to state management patterns in .NET MAUI covering four complementary approaches: MVVM with INotifyPropertyChanged for page-level state, MVU for unidirectional predictable updates, Visual State Manager for declarative visual-only changes, and DI-backed singleton stores for app-wide shared state. Includes code examples for each pattern, a comparison table, best practices, and a decision guide to help choose the right approach based on complexity and scope.
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