NetworkInterface.Supports メソッド

.NET Framework クラス ライブラリ リファレンス

NetworkInterface.Supports メソッド

メモ : このメソッドは、.NET Framework version 2.0 で新しく追加されたものです。

指定したプロトコルをインターフェイスがサポートしているかどうかを示す Boolean 値を取得します。

名前空間: System.Net.NetworkInformation
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public MustOverride Function
 Supports ( _
    networkInterfaceComponent As NetworkInterfaceComponent _
) As Boolean

Visual Basic (使用法)

Dim instance As NetworkInterface
Dim networkInterfaceComponent As NetworkInterfaceComponent
Dim returnValue As Boolean

returnValue = instance.Supports(networkInterfaceComponent)

C#

public abstract bool Supports (
    NetworkInterfaceComponent networkInterfaceComponent
)

C++

public:
virtual bool Supports (
    NetworkInterfaceComponent networkInterfaceComponent
) abstract

J#

public abstract boolean Supports (
    NetworkInterfaceComponent networkInterfaceComponent
)

JScript

public abstract function Supports (
    networkInterfaceComponent : NetworkInterfaceComponent
) : boolean

パラメータ

networkInterfaceComponent

NetworkInterfaceComponent 値。

戻り値
指定したプロトコルがサポートされる場合は true。それ以外の場合は false。

使用例

ローカル コンピュータの IPv4 インターフェイスの統計情報を表示するコード例を次に示します。

Visual Basic

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 'DisplayIPv4NetworkInterfaces

C#

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

    foreach (NetworkInterface adapter in nics)
    {
        // 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 == null)
        {
            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);
    }
}

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
NetworkInterface クラス
NetworkInterface メンバ
System.Net.NetworkInformation 名前空間