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IObserver<T>.OnNext(T) Method

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Definition

Namespace:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
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);
}

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