maui-data-binding

Compiled bindings in .NET MAUI are enabled by declaring x:DataType on your XAML page or DataTemplate, which provides compile-time checking and eliminates reflection-based overhead for better runtime and AOT performance.

For MAUI DataTemplates and CollectionViews, x:DataType placement should be on the root element of the DataTemplate itself, ensuring the compiler resolves binding expressions against the specific view model type for that template.

Explicitly set the binding mode in MAUI XAML only when the default OneWay behavior does not match your view model update requirements, reducing noise and preventing bugs by omitting Mode when defaults suffice.

Implement IValueConverter and IMultiValueConverter patterns in .NET MAUI by creating classes that convert data between view model properties and XAML UI elements, handling formatting and logic that belongs outside the view model.

ObservableCollection updates in MAUI AOT builds crash when modifications happen off the UI thread, requiring proper UI thread marshaling and safe update patterns to ensure thread-safe data binding operations.

.NET MAUI data binding works with AOT and trimming when using compiled bindings with correct x:DataType placement, avoiding reflection-based bindings that trimmer-safe builds remove during compilation.