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PhysicalAddress Class

Provides the Media Access Control (MAC) address for a network interface (adapter).


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

public class PhysicalAddress

The PhysicalAddress type exposes the following members.

Public methodPhysicalAddressInitializes a new instance of the PhysicalAddress class.

Public methodEqualsCompares two PhysicalAddress instances. (Overrides Object.Equals(Object).)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetAddressBytesReturns the address of the current instance.
Public methodGetHashCodeReturns the hash value of a physical address. (Overrides Object.GetHashCode().)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodStatic memberParseParses the specified String and stores its contents as the address bytes of the PhysicalAddress returned by this method.
Public methodToStringReturns the String representation of the address of this instance. (Overrides Object.ToString().)

Public fieldStatic memberNoneReturns a new PhysicalAddress instance with a zero length address. This field is read-only.

The MAC address, or physical address, is a hardware address that uniquely identifies each node, such as a computer or printer, on a network.

Instances of this class are returned by the NetworkInterface.GetPhysicalAddress method.

The following code example displays the physical addresses of all interfaces on the local computer.

public static void ShowNetworkInterfaces()
    IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties();
    NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
    Console.WriteLine("Interface information for {0}.{1}     ",
            computerProperties.HostName, computerProperties.DomainName);
    if (nics == null || nics.Length < 1)
        Console.WriteLine("  No network interfaces found.");

    Console.WriteLine("  Number of interfaces .................... : {0}", nics.Length);
    foreach (NetworkInterface adapter in nics)
        IPInterfaceProperties properties = adapter.GetIPProperties(); //  .GetIPInterfaceProperties();
        Console.WriteLine("  Interface type .......................... : {0}", adapter.NetworkInterfaceType);
        Console.Write("  Physical address ........................ : ");
        PhysicalAddress address = adapter.GetPhysicalAddress();
        byte[] bytes = address.GetAddressBytes();
        for(int i = 0; i< bytes.Length; i++)
            // Display the physical address in hexadecimal.
            Console.Write("{0}", bytes[i].ToString("X2"));
            // Insert a hyphen after each byte, unless we are at the end of the 
            // address.
            if (i != bytes.Length -1)

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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