Class DependencyObject

Namespace

Icy.Data.Markup

Assembly

IcyUI.dll

Represents an object that can store attached properties, and whose registered properties (see RegisterReferenceAttribute) participate in the value-precedence system used by styles, visual states, and animations.

public abstract class DependencyObject : BindableObject, INotifyPropertyChanging, IBindingTarget, INotifyPropertyChanged

Inheritance

object

DispatcherObject

ObservableDispatcherObject

BindableObject

DependencyObject

Implements

INotifyPropertyChanging

IBindingTarget

INotifyPropertyChanged

Derived

UIElement

Inherited Members

BindableObject.Bindings

BindableObject.Bind(IBinding)

BindableObject.Unbind(IBinding)

BindableObject.UnbindAll()

BindableObject.UnbindWhere(Func<IBinding, bool>)

BindableObject.OnPropertyChanging(PropertyChangingEventArgs)

ObservableDispatcherObject.PropertyChanged

ObservableDispatcherObject.PropertyChanging

ObservableDispatcherObject.OnPropertyChanged(PropertyChangedEventArgs)

ObservableDispatcherObject.OnPropertyChanged(string)

ObservableDispatcherObject.OnPropertyChanging(string)

ObservableDispatcherObject.SetProperty<T>(ref T, T, IEqualityComparer<T>, string)

ObservableDispatcherObject.SetProperty<T>(T, T, Action<T>, string)

ObservableDispatcherObject.SetProperty<T>(T, T, IEqualityComparer<T>, Action<T>, string)

ObservableDispatcherObject.SetProperty<TModel, T>(T, T, TModel, Action<TModel, T>, string)

ObservableDispatcherObject.SetProperty<TModel, T>(T, T, IEqualityComparer<T>, TModel, Action<TModel, T>, string)

ObservableDispatcherObject.SetPropertyAndNotifyOnCompletion(ref ObservableDispatcherObject.TaskNotifier, Task, string)

ObservableDispatcherObject.SetPropertyAndNotifyOnCompletion(ref ObservableDispatcherObject.TaskNotifier, Task, Action<Task>, string)

ObservableDispatcherObject.SetPropertyAndNotifyOnCompletion<T>(ref ObservableDispatcherObject.TaskNotifier<T>, Task<T>, string)

ObservableDispatcherObject.SetPropertyAndNotifyOnCompletion<T>(ref ObservableDispatcherObject.TaskNotifier<T>, Task<T>, Action<Task<T>>, string)

DispatcherObject.Dispatcher

DispatcherObject.CheckAccess()

DispatcherObject.VerifyAccess()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Extension Methods

PropertyReferencesExtensions.ContainsProperty(object, IPropertyReference)

Constructors

DependencyObject()

Initializes a new instance of the DependencyObject class, binding it to the Current registry for its lifetime.

protected DependencyObject()

Properties

PropertyRegistry

Gets the PropertyRegistry this instance resolves its properties through, captured when it was constructed.

public PropertyRegistry PropertyRegistry { get; }

Property Value

PropertyRegistry

Remarks

Captured once rather than read per access so the object keeps using one registry even if a different one later becomes Current - an object whose property references came from two registries would have its value-precedence bookkeeping split between them. Use For(object) to reach this from code holding an arbitrary target.

Methods

GetPropertyStore()

Gets the IPropertyStore registered for this instance's runtime type, resolving and registering it on first use.

public IPropertyStore GetPropertyStore()

Returns

IPropertyStore

The property store for GetType().

SetProperty<T>(ref T, T, string?)

Sets a property's backing field and raises PropertyChanged when the value changes. An assignment of the value the property already holds still counts as a local value, so a style applied later doesn't replace it.

protected bool SetProperty<T>(ref T field, T newValue, string? propertyName = null)

Parameters

field T

The property's backing field.

newValue T

The value to assign.

propertyName string

The property's name; filled in by the compiler.

Returns

bool

true when the value changed.

Type Parameters

T

The property's type.

Remarks

Without this, new Button { HorizontalAlignment = HorizontalAlignment.Stretch } would change nothing (Stretch is the default), wouldn't be recorded, and the theme's style would override it once the button joins a canvas.