AddClassHandler<TTarget, TValue>(IObservable<AvaloniaPropertyChangedEventArgs<TValue>>, Action<TTarget, AvaloniaPropertyChangedEventArgs<TValue>>) Method

Subscribes to a property changed notifications for changes that originate from a TTarget.

Definition

Namespace: Avalonia
Assembly: Avalonia.Base (in Avalonia.Base.dll)

C#

public static IDisposable AddClassHandler<TTarget, TValue>(
	this IObservable<AvaloniaPropertyChangedEventArgs<TValue>> observable,
	Action<TTarget, AvaloniaPropertyChangedEventArgs<TValue>> action
)
where TTarget : AvaloniaObject

VB

<ExtensionAttribute>
Public Shared Function AddClassHandler(Of TTarget As AvaloniaObject, TValue) ( 
	observable As IObservable(Of AvaloniaPropertyChangedEventArgs(Of TValue)),
	action As Action(Of TTarget, AvaloniaPropertyChangedEventArgs(Of TValue))
) As IDisposable

F#

[<ExtensionAttribute>]
static member AddClassHandler : 
        observable : IObservable<AvaloniaPropertyChangedEventArgs<'TValue>> * 
        action : Action<'TTarget, AvaloniaPropertyChangedEventArgs<'TValue>> -> IDisposable  when 'TTarget : AvaloniaObject

Parameters

  IObservable(AvaloniaPropertyChangedEventArgs(TValue))

The property changed observable.

  Action(TTarget, AvaloniaPropertyChangedEventArgs(TValue))

The method to call. The parameters are the sender and the event args.

Type Parameters

The type of the property change sender.

The type of the property.

Return Value

IDisposable
A disposable that can be used to terminate the subscription.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable(AvaloniaPropertyChangedEventArgs(TValue)). When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

See Also

Reference

AvaloniaObjectExtensions Class
AddClassHandler Overload
Avalonia Namespace