)} ,System.Action{System.Exception})} ,System.Action)} ,System.Action{System.Exception},System.Action)}

Witness.Create(Action) method¶

Defined in

Type: Witness Namespace: ReactiveUI.Primitives.Advanced Assembly: ReactiveUI.Primitives.Core.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 IObserver<T> Create<T>(Action<T> onNext)
2. public static IObserver<T> Create<T>(Action<T> onNext, Action<Exception> onError)
3. public static IObserver<T> Create<T>(Action<T> onNext, Action onCompleted)
4. public static IObserver<T> Create<T>(Action<T> onNext, Action<Exception> onError, Action onCompleted)

1. Overload¶

public static IObserver<T> Create<T>(Action<T> onNext)

View source

Summary: Creates a witness from an onNext delegate and default terminal handlers.

Type parameters

Name	Description
`T`	The observed value type.

Parameters

Name	Type	Description
`onNext`	Action	Callback invoked for each value.

Returns: IObserver -- An observer backed by the supplied callbacks.

2. Overload¶

public static IObserver<T> Create<T>(Action<T> onNext, Action<Exception> onError)

View source

Summary: Creates a witness from value and error delegates.

Type parameters

Name	Description
`T`	The observed value type.

Parameters

Name	Type	Description
`onNext`	Action	Callback invoked for each value.
`onError`	Action	Callback invoked for terminal errors.

Returns: IObserver -- An observer backed by the supplied callbacks.

3. Overload¶

public static IObserver<T> Create<T>(Action<T> onNext, Action onCompleted)

View source

Summary: Creates a witness from value and completion delegates.

Type parameters

Name	Description
`T`	The observed value type.

Parameters

Name	Type	Description
`onNext`	Action	Callback invoked for each value.
`onCompleted`	Action	Callback invoked for completion.

Returns: IObserver -- An observer backed by the supplied callbacks.

4. Overload¶

public static IObserver<T> Create<T>(Action<T> onNext, Action<Exception> onError, Action onCompleted)

View source

Summary: Creates a witness from explicit value, error, and completion callbacks.

Type parameters

Name	Description
`T`	The observed value type.

Parameters

Name	Type	Description
`onNext`	Action	Callback invoked for each value.
`onError`	Action	Callback invoked for terminal errors.
`onCompleted`	Action	Callback invoked for completion.

Returns: IObserver -- An observer backed by the supplied callbacks.

Exceptions

Type	Condition
System.ArgumentNullException	Any callback is `null`.