IObserver<T>.OnNext(T) Method

Reference

Definition

Namespace:: System

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

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

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Important

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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);
}

member _.OnNext(value) =
    printfn $"{name}: The current location is {value.Latitude}, {value.Longitude}"

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.

Applies to

Proizvod	Verzije
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP	10.0

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