IPv4InterfaceProperties Class

Definition

Namespace:

System.Net.NetworkInformation

Assembly:

System.Net.NetworkInformation.dll

Provides information about network interfaces that support Internet Protocol version 4 (IPv4).

public ref class IPv4InterfaceProperties abstract

public abstract class IPv4InterfaceProperties

type IPv4InterfaceProperties = class

Public MustInherit Class IPv4InterfaceProperties

Inheritance

Object

IPv4InterfaceProperties

Examples

The following code example gets an GetIPv4Properties object and displays its data.

void DisplayIPv4NetworkInterfaces()
{
   array<NetworkInterface^>^nics = NetworkInterface::GetAllNetworkInterfaces();
   IPGlobalProperties ^ properties = IPGlobalProperties::GetIPGlobalProperties();
   Console::WriteLine( "IPv4 interface information for {0}.{1}", properties->HostName, properties->DomainName );
   System::Collections::IEnumerator^ myEnum23 = nics->GetEnumerator();
   while ( myEnum23->MoveNext() )
   {
      NetworkInterface ^ adapter = safe_cast<NetworkInterface ^>(myEnum23->Current);

      // Only display informatin for interfaces that support IPv4.
      if ( adapter->Supports( NetworkInterfaceComponent::IPv4 ) == false )
      {
         continue;
      }
      Console::WriteLine();
      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();
      if ( !p )
      {
         Console::WriteLine( "No IPv4 information is available for this interface." );
         continue;
      }

      // 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 );
   }
}

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) == false)
        {
            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();

        if (p == null)
        {
            Console.WriteLine("No IPv4 information is available for this interface.");
            Console.WriteLine();
            continue;
        }
        // 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()
        
        If p Is Nothing Then
            Console.WriteLine("No IPv4 information is available for this interface.")
            GoTo ContinueForEach1
        End If
        ' 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

Remarks

This class provides access to configuration and address information for network interfaces that support IPv4. You do not create instances of this class; they are returned by the GetIPv4Properties method.

For IPV6 properties, see GetIPv6Properties.

Constructors

IPv4InterfaceProperties()

Initializes a new instance of the IPv4InterfaceProperties class.

Properties

Index	Gets the index of the network interface associated with the Internet Protocol version 4 (IPv4) address.
IsAutomaticPrivateAddressingActive	Gets a Boolean value that indicates whether this interface has an automatic private IP addressing (APIPA) address.
IsAutomaticPrivateAddressingEnabled	Gets a Boolean value that indicates whether this interface has automatic private IP addressing (APIPA) enabled.
IsDhcpEnabled	Gets a Boolean value that indicates whether the interface is configured to use a Dynamic Host Configuration Protocol (DHCP) server to obtain an IP address.
IsForwardingEnabled	Gets a Boolean value that indicates whether this interface can forward (route) packets.
Mtu	Gets the maximum transmission unit (MTU) for this network interface.
UsesWins	Gets a Boolean value that indicates whether an interface uses Windows Internet Name Service (WINS).

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (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)