maui-data-binding

# .NET MAUI Data Binding Wire UI controls to ViewModel properties with compile-time safety, correct change notification, and minimal overhead. Prefer compiled bindings everywhere and treat binding warnings as build errors. ## When to Use - Adding `x:DataType` compiled bindings to a new or existing page - Implementing `INotifyPropertyChanged` or CommunityToolkit `ObservableObject` - Creating or consuming `IValueConverter` / `IMultiValueConverter` - Choosing the correct `BindingMode` for a control property - Setting `BindingContext` in XAML or code-behind - Using relative bindings (`Self`, `AncestorType`, `TemplatedParent`) - Applying `StringFormat`, `FallbackValue`, or `TargetNullValue` - Writing AOT-safe code bindings with `SetBinding` and lambdas (.NET 9+) ## When Not to Use - **CollectionView layouts / templates** — use the `maui-collectionview` skill - **Shell navigation parameters** — use the `maui-shell-navigation` skill - **Service registration / DI** — use the `maui-dependency-injection` skill - **Property-change-triggered animations** — use built-in [.NET MAUI animation APIs](https://learn.microsoft.com/dotnet/maui/user-interface/animation/basic) ## Inputs - A .NET MAUI project targeting .NET 8 or later - XAML pages or C# code-behind where bindings are declared - A ViewModel class (or plan to create one) --- ## Compiled Bindings — x:DataType Placement Compiled bindings are **8–20× faster** than reflection-based bindings and are required for NativeAOT / trimm...