defining-wpf-dependencyproperty

# WPF DependencyProperty Patterns Defining dependency properties for data binding, styling, animation, and property value inheritance. **Advanced Patterns:** See [ADVANCED.md](ADVANCED.md) for value inheritance, metadata override, and event integration. ## 1. DependencyProperty Overview ``` Standard CLR Property: private string _name; public string Name { get => _name; set => _name = value; } DependencyProperty: public static readonly DependencyProperty NameProperty = ... public string Name { get => (string)GetValue(NameProperty); set => SetValue(NameProperty, value); } Benefits: ✅ Data Binding ✅ Styling & Templating ✅ Animation ✅ Property Value Inheritance ✅ Default Values ✅ Change Notifications ✅ Value Coercion ✅ Validation ``` --- ## 2. Basic DependencyProperty ### 2.1 Standard Registration ```csharp namespace MyApp.Controls; using System.Windows; using System.Windows.Controls; public class MyControl : Control { // 1. Register DependencyProperty public static readonly DependencyProperty TitleProperty = DependencyProperty.Register( name: nameof(Title), propertyType: typeof(string), ownerType: typeof(MyControl), typeMetadata: new PropertyMetadata(defaultValue: string.Empty)); // 2. CLR property wrapper public string Title { get => (string)GetValue(TitleProperty); set => SetValue(TitleProperty, value); } } ``` ### 2.2 With FrameworkPropertyMeta...