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IObserver<T>.OnNext Method

Provides the observer with new data.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

void OnNext(
	T value


Type: T

The current notification information.

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

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);

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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