,System.Action{System.EventHandler})} },System.Action{System.EventHandler{--0}})} ,System.Action{--0})}

Signal.FromEventPattern(Action, Action) method¶

Defined in

Type: Signal Namespace: ReactiveUI.Primitives.Reactive.Signals Assembly: ReactiveUI.Primitives.Reactive.dll

Applies to

net10.0, net10.0-browserwasm1.0, net10.0-desktop1.0, net9.0, net9.0-browserwasm1.0, net9.0-desktop1.0, net8.0, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.2, net8.0-macos14.5, net8.0-tvos17.2, netstandard2.1, net462, net481

Overloads¶

1. public static IObservable<EventPattern<EventArgs>> FromEventPattern(Action<EventHandler> addHandler, Action<EventHandler> removeHandler)
2. public static IObservable<EventPattern<TEventArgs>> FromEventPattern<TEventArgs>(Action<EventHandler<TEventArgs>> addHandler, Action<EventHandler<TEventArgs>> removeHandler) where TEventArgs : EventArgs
3. public static IObservable<EventPattern<TEventArgs>> FromEventPattern<TEventHandler, TEventArgs>(Action<TEventHandler> addHandler, Action<TEventHandler> removeHandler) where TEventHandler : Delegate where TEventArgs : EventArgs

1. Overload¶

public static IObservable<EventPattern<EventArgs>> FromEventPattern(Action<EventHandler> addHandler, Action<EventHandler> removeHandler)

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Summary: Converts an event into a signal of event pattern values.

Parameters

Name	Type	Description
`addHandler`	Action	The action that subscribes the event handler.
`removeHandler`	Action	The action that unsubscribes the event handler.

Returns: IObservable> -- An Signals.

2. Overload¶

public static IObservable<EventPattern<TEventArgs>> FromEventPattern<TEventArgs>(Action<EventHandler<TEventArgs>> addHandler, Action<EventHandler<TEventArgs>> removeHandler) where TEventArgs : EventArgs

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Summary: Converts an event into a signal of event pattern values.

Type parameters

Name	Description
`TEventArgs`	The type of the event arguments.

Parameters

Name	Type	Description
`addHandler`	Action>	The action that subscribes the event handler.
`removeHandler`	Action>	The action that unsubscribes the event handler.

Returns: IObservable> -- An Signals.

3. Overload¶

public static IObservable<EventPattern<TEventArgs>> FromEventPattern<TEventHandler, TEventArgs>(Action<TEventHandler> addHandler, Action<TEventHandler> removeHandler) where TEventHandler : Delegate where TEventArgs : EventArgs

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Summary: Creates a signal from an event add/remove pair.

Type parameters

Name	Description
`TEventHandler`	The delegate type used by the event.
`TEventArgs`	The event argument type.

Parameters

Name	Type	Description
`addHandler`	Action	The action that attaches the generated event handler.
`removeHandler`	Action	The action that detaches the generated event handler.

Returns: IObservable> -- A signal that emits event patterns for each raised event.

Exceptions

Type	Condition
System.ArgumentNullException	`addHandler` or `removeHandler` is `null`.
System.NotSupportedException	`TEventHandler` is not a supported event delegate type.