WeakSubscriber.Create<TOwner, TEventArgs, THandler>(TOwner, Action<TOwner, Object, TEventArgs>, Action<IWeakSubscriber<THandler>, Object>, Func<WeakSubscriber.IHandler<TEventArgs>, THandler>) Method

Creates an event handler that prevents memory leaks caused by strong references between event publishers and subscribers.

Namespace: DevExpress.Maui.Mvvm

Assembly: DevExpress.Maui.Mvvm.dll

NuGet Package: DevExpress.Maui.Mvvm

Declaration

public static IWeakSubscriber<THandler> Create<TOwner, TEventArgs, THandler>(
    TOwner eventHandlerOwner,
    Action<TOwner, object, TEventArgs> eventHandler,
    Action<IWeakSubscriber<THandler>, object> unsubscribe,
    Func<WeakSubscriber.IHandler<TEventArgs>, THandler> createHandler
)
    where TOwner : class

Parameters

Name	Type	Description
eventHandlerOwner	TOwner	The class instance that handles the specified event.
eventHandler	Action<TOwner, System.Object, TEventArgs>	An action that invokes when the event occurs.
unsubscribe	Action<IWeakSubscriber<THandler>, System.Object>	An action that unsubscribes from the specified event.
createHandler	Func<WeakSubscriber.IHandler<TEventArgs>, THandler>	The function that returns the actual event handler. It is always should be: x => x.OnEvent

Type Parameters

Name	Description
TOwner	The type of class that handles an event.
TEventArgs	The type of event arguments associated with the event.
THandler	The event handler type.

Returns

Type	Description
IWeakSubscriber<THandler>	An object that provides the event handler to make an event subscription.