NetworkInterface.SupportsMulticast Właściwość

Definicja

Przestrzeń nazw:

System.Net.NetworkInformation

Zestaw:

System.Net.NetworkInformation.dll

Źródło:

NetworkInterface.cs

Pobiera wartość wskazującą Boolean , czy interfejs sieciowy jest włączony do odbierania pakietów multiemisji.

public:
 virtual property bool SupportsMulticast { bool get(); };

public virtual bool SupportsMulticast { get; }

member this.SupportsMulticast : bool

Public Overridable ReadOnly Property SupportsMulticast As Boolean

Wartość właściwości

Boolean

true jeśli interfejs odbiera pakiety multiemisji; w przeciwnym razie , false.

Wyjątki

PlatformNotSupportedException

Ta właściwość jest nieprawidłowa na komputerach z systemami operacyjnymi starszymi niż Windows XP.

Przykłady

Poniższy przykład kodu przedstawia podsumowanie wszystkich interfejsów na komputerze lokalnym.

void DisplayTypeAndAddress()
{
   IPGlobalProperties ^ computerProperties = IPGlobalProperties::GetIPGlobalProperties();
   array<NetworkInterface^>^nics = NetworkInterface::GetAllNetworkInterfaces();
   Console::WriteLine( "Interface information for {0}.{1}     ", computerProperties->HostName, computerProperties->DomainName );
   System::Collections::IEnumerator^ myEnum27 = nics->GetEnumerator();
   while ( myEnum27->MoveNext() )
   {
      NetworkInterface ^ adapter = safe_cast<NetworkInterface ^>(myEnum27->Current);
      IPInterfaceProperties ^ properties = adapter->GetIPProperties();
      Console::WriteLine( adapter->Description );
      Console::WriteLine( String::Empty->PadLeft( adapter->Description->Length, '=' ) );
      Console::WriteLine( "  Interface type .......................... : {0}", 
         adapter->NetworkInterfaceType );
      Console::WriteLine( "  Physical Address ........................ : {0}", 
         adapter->GetPhysicalAddress() );
      Console::WriteLine( "  Is receive only.......................... : {0}", 
         adapter->IsReceiveOnly );
      Console::WriteLine( "  Multicast................................ : {0}", 
         adapter->SupportsMulticast );
   }
}

public static void DisplayTypeAndAddress()
{
    IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties();
    NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
    Console.WriteLine("Interface information for {0}.{1}     ",
            computerProperties.HostName, computerProperties.DomainName);
    foreach (NetworkInterface adapter in nics)
    {
        IPInterfaceProperties properties = adapter.GetIPProperties();
        Console.WriteLine(adapter.Description);
        Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length,'='));
        Console.WriteLine("  Interface type .......................... : {0}", adapter.NetworkInterfaceType);
        Console.WriteLine("  Physical Address ........................ : {0}",
                   adapter.GetPhysicalAddress().ToString());
        Console.WriteLine("  Is receive only.......................... : {0}", adapter.IsReceiveOnly);
        Console.WriteLine("  Multicast................................ : {0}", adapter.SupportsMulticast);
        Console.WriteLine();
      }
   }

Public Shared Sub DisplayTypeAndAddress() 
    Dim computerProperties As IPGlobalProperties = IPGlobalProperties.GetIPGlobalProperties()
    Dim nics As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
    Console.WriteLine("Interface information for {0}.{1}     ", computerProperties.HostName, computerProperties.DomainName)
    Dim adapter As NetworkInterface
    For Each adapter In  nics
        Dim properties As IPInterfaceProperties = adapter.GetIPProperties()
        Console.WriteLine(adapter.Description)
        Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length, "="c))
        Console.WriteLine("  Interface type .......................... : {0}", adapter.NetworkInterfaceType)
        Console.WriteLine("  Physical Address ........................ : {0}", adapter.GetPhysicalAddress().ToString())
        Console.WriteLine("  Is receive only.......................... : {0}", adapter.IsReceiveOnly)
        Console.WriteLine("  Multicast................................ : {0}", adapter.SupportsMulticast)
    Next adapter

End Sub

Uwagi

Multiemisji to czynność wysyłania pakietu danych do wielu miejsc docelowych jednocześnie.