NetworkChange Class

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Allows applications to receive notification when the Internet Protocol (IP) address of a network interface, also called a network card or adapter, changes.

Inheritance Hierarchy

System..::.Object
System.Net.NetworkInformation..::.NetworkChange

Namespace: System.Net.NetworkInformation
Assembly: System.Net (in System.Net.dll)

Syntax

Public MustInherit Class NetworkChange
public abstract class NetworkChange

The NetworkChange type exposes the following members.

Constructors

Name Description
NetworkChange Initializes a new instance of the NetworkChange class.

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Methods

Name Description
Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
GetType Gets the Type of the current instance. (Inherited from Object.)
MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
ToString Returns a string that represents the current object. (Inherited from Object.)

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Events

Name Description
NetworkAddressChanged Occurs when the IP address of a network interface changes.

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Remarks

The NetworkChange class provides address change notification by raising NetworkAddressChanged events. An interface address can change for many reasons, such as a disconnected network cable, moving out of range of a wireless Local Area Network, or hardware failure.

To receive notification, you must identify your application's event handlers, which are one or more methods that perform your application-specific tasks each time the event is raised. To have a NetworkChange object call your event-handling methods when a NetworkAddressChanged event occurs, you must associate the methods with a NetworkAddressChangedEventHandler delegate, and add this delegate to the event.

This class is used to enable basic detection of changes in network state, such as address or interface state changes. The resulting capabilities allow applications to maintain internal application state to optimize whether to make remote network calls or to retrieve data from a local content cache, a core requirement to enable offline application scenarios.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

System.Net.NetworkInformation Namespace