Partager via

IPv4InterfaceProperties.IsAutomaticPrivateAddressingEnabled Propriété

Définition

Espace de noms:
System.Net.NetworkInformation
Assemblys:
netstandard.dll, System.Net.NetworkInformation.dll
Assembly:
System.Net.NetworkInformation.dll
Assembly:
System.dll
Assembly:
netstandard.dll
Source:
IPv4InterfaceProperties.cs

Obtient une valeur Boolean qui indique si l'adressage IP privé automatique (APIPA) est activé sur cette interface.

public:
 abstract property bool IsAutomaticPrivateAddressingEnabled { bool get(); };
[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public abstract bool IsAutomaticPrivateAddressingEnabled { get; }
public abstract bool IsAutomaticPrivateAddressingEnabled { get; }
[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
member this.IsAutomaticPrivateAddressingEnabled : bool
member this.IsAutomaticPrivateAddressingEnabled : bool
Public MustOverride ReadOnly Property IsAutomaticPrivateAddressingEnabled As Boolean

Valeur de propriété

Boolean

true si l'interface utilise l'adressage IP privé automatique ; sinon, false.

Attributs
SupportedOSPlatformAttribute

Exemples

L’exemple de code suivant obtient un IPv4InterfaceProperties objet et affiche ses données.

public static void DisplayIPv4NetworkInterfaces()
{
    NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
    IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
    Console.WriteLine("IPv4 interface information for {0}.{1}",
       properties.HostName, properties.DomainName);
    Console.WriteLine();

    foreach (NetworkInterface adapter in nics)
    {
        // Only display informatin for interfaces that support IPv4.
        if (!adapter.Supports(NetworkInterfaceComponent.IPv4))
        {
            continue;
        }
        Console.WriteLine(adapter.Description);
        // Underline the description.
        Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length,'='));
        IPInterfaceProperties adapterProperties = adapter.GetIPProperties();
        // Try to get the IPv4 interface properties.
        IPv4InterfaceProperties p = adapterProperties.GetIPv4Properties();

        // Display the IPv4 specific data.
        Console.WriteLine("  Index ............................. : {0}", p.Index);
        Console.WriteLine("  MTU ............................... : {0}", p.Mtu);
        Console.WriteLine("  APIPA active....................... : {0}",
            p.IsAutomaticPrivateAddressingActive);
        Console.WriteLine("  APIPA enabled...................... : {0}",
            p.IsAutomaticPrivateAddressingEnabled);
        Console.WriteLine("  Forwarding enabled................. : {0}",
            p.IsForwardingEnabled);
        Console.WriteLine("  Uses WINS ......................... : {0}",
            p.UsesWins);
        Console.WriteLine();
    }
}

Public Shared Sub DisplayIPv4NetworkInterfaces() 
    Dim nics As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
    Dim properties As IPGlobalProperties = IPGlobalProperties.GetIPGlobalProperties()
    Console.WriteLine("IPv4 interface information for {0}.{1}", properties.HostName, properties.DomainName)
    
    Dim adapter As NetworkInterface
    For Each adapter In  nics
        ' Only display informatin for interfaces that support IPv4.
        If adapter.Supports(NetworkInterfaceComponent.IPv4) = False Then
            GoTo ContinueForEach1
        End If
        Console.WriteLine()
        Console.WriteLine(adapter.Description)
        ' Underline the description.
        Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length, "="c))
        Dim adapterProperties As IPInterfaceProperties = adapter.GetIPProperties()
        ' Try to get the IPv4 interface properties.
        Dim p As IPv4InterfaceProperties = adapterProperties.GetIPv4Properties()

        ' Display the IPv4 specific data.
        Console.WriteLine("  Index ............................. : {0}", p.Index)
        Console.WriteLine("  MTU ............................... : {0}", p.Mtu)
        Console.WriteLine("  APIPA active....................... : {0}", p.IsAutomaticPrivateAddressingActive)
        Console.WriteLine("  APIPA enabled...................... : {0}", p.IsAutomaticPrivateAddressingEnabled)
        Console.WriteLine("  Forwarding enabled................. : {0}", p.IsForwardingEnabled)
        Console.WriteLine("  Uses WINS ......................... : {0}", p.UsesWins)
    ContinueForEach1:
    Next adapter

End Sub

Remarques

L’adressage IP privé automatique permet aux ordinateurs qui n’ont pas accès à un serveur DHCP (Dynamic Host Configuration Protocol) de se voir attribuer automatiquement une adresse IP qui n’est pas en conflit avec les adresses publiques. Ces adresses sont comprises entre 169.254.0.0 et 169.254.255.255.

S’applique à