IAsyncObserver<T> Interface
Definition
Important
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Provides a mechanism for receiving push-based asynchronous notifications.
public interface IAsyncObserver<in T>type IAsyncObserver<'T> = interfacePublic Interface IAsyncObserver(Of In T)Type Parameters
- T
The type of the elements received by the observer.
This type parameter is contravariant. That is, you can use either the type you specified or any type that is less derived. For more information about covariance and contravariance, see Covariance and Contravariance in Generics.Remarks
This interface provides an async-native observer pattern where all notification methods return ValueTask. Subscription cancellation is handled via IAsyncDisposable rather than CancellationToken.
Methods
| Name | Description |
|---|---|
| OnCompletedAsync() |
Notifies the observer that the provider has finished sending push-based notifications. |
| OnErrorAsync(Exception) |
Notifies the observer that the provider has experienced an error condition. |
| OnNextAsync(T) |
Provides the observer with new data. |
