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IPv4InterfaceProperties.IsAutomaticPrivateAddressingActive Eigenschaft

Definition

Namespace:
System.Net.NetworkInformation
Assemblys:
netstandard.dll, System.Net.NetworkInformation.dll
Assembly:
System.Net.NetworkInformation.dll
Assembly:
System.dll
Assembly:
netstandard.dll
Quelle:
IPv4InterfaceProperties.cs

Ruft einen Boolean-Wert ab, der angibt, ob diese Schnittstelle über eine APIPA (Automatic Private IP Addressing)-Adresse verfügt.

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

Eigenschaftswert

Boolean

true, wenn die Schnittstelle eine APIPA-Adresse verwendet, andernfalls false.

Attribute
SupportedOSPlatformAttribute

Beispiele

Im folgenden Codebeispiel wird ein IPv4InterfaceProperties -Objekt abgerufen und seine Daten angezeigt.

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

Hinweise

Mit der automatischen privaten IP-Adressierung können Computer, die keinen Zugriff auf einen DHCP-Server (Dynamic Host Configuration Protocol) haben, automatisch eine IP-Adresse zugewiesen werden, die nicht mit öffentlichen Adressen in Konflikt steht. Diese Adressen liegen im Bereich 169.254.0.0 bis 169.254.255.255.

Gilt für: