System.Net.NetworkInformation

References one or more methods to be called when the address of a network interface changes.

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

Occurs when the IP address of a network interface changes.

Provides configuration and statistical information for a network interface.

Indicates whether any network connection is available.

true if a network connection is available; otherwise, false.