IObserver<T>.OnNext(T) Method

Definition

Namespace:: System

Assemblies:: System.Runtime.dll, mscorlib.dll, netstandard.dll

Provides the observer with new data.

public void OnNext (T value);

abstract member OnNext : 'T -> unit

Public Sub OnNext (value As T)

Parameters

value: T

The current notification information.

Examples

The following example provides an implementation of the OnNext method in a latitude/longitude tracking application. See the Example section of the IObserver<T> topic for the complete example.

public virtual void OnNext(Location value)
{
   Console.WriteLine("{2}: The current location is {0}, {1}", value.Latitude, value.Longitude, this.Name);
}

Public Overridable Sub OnNext(ByVal value As Location) Implements System.IObserver(Of Location).OnNext
   Console.WriteLine("{2}: The current location is {0}, {1}", value.Latitude, value.Longitude, Me.Name)
End Sub

Remarks

After an observer has called a provider's IObservable<T>.Subscribe method, the provider calls the observer's OnNext method to provide notifications.