IMethodMessage.HasVarArgs IMethodMessage.HasVarArgs IMethodMessage.HasVarArgs IMethodMessage.HasVarArgs Property

Definizione

Ottiene un valore che indica se il messaggio contiene argomenti variabili.Gets a value indicating whether the message has variable arguments.

public:
 property bool HasVarArgs { bool get(); };
[get: System.Security.SecurityCritical]
public bool HasVarArgs { get; }
member this.HasVarArgs : bool
Public ReadOnly Property HasVarArgs As Boolean

Valore della proprietà

true se il metodo può accettare un numero variabile di argomenti; in caso contrario, false.true if the method can accept a variable number of arguments; otherwise, false.

Eccezioni

Il chiamante immediato esegue la chiamata tramite un riferimento all'interfaccia, ma non dispone delle autorizzazioni di accesso all'infrastruttura.The immediate caller makes the call through a reference to the interface and does not have infrastructure permission.

Esempi

Esempio di codice seguente mostra un proxy personalizzato che esegue l'override RealProxy.Invoke per scrivere le informazioni sul messaggio nella console, ad esempio se la chiamata al metodo con argomenti variabili.The following example code shows a custom proxy that overrides RealProxy.Invoke in order to write the message information to the console, including whether the method call has variable arguments.

// Overriding the Invoke method of RealProxy.
virtual IMessage^ Invoke( IMessage^ message ) override
{
   IMethodMessage^ myMethodMessage = dynamic_cast<IMethodMessage^>(message);
   Console::WriteLine( "**** Begin Invoke ****" );
   Console::WriteLine( "\tType is : {0}", myType );
   Console::WriteLine( "\tMethod name : {0}", myMethodMessage->MethodName );
   for ( int i = 0; i < myMethodMessage->ArgCount; i++ )
   {
      Console::WriteLine( "\tArgName is : {0}", myMethodMessage->GetArgName( i ) );
      Console::WriteLine( "\tArgValue is: {0}", myMethodMessage->GetArg( i ) );

   }
   if ( myMethodMessage->HasVarArgs )
         Console::WriteLine( "\t The method have variable arguments!!" );
   else
         Console::WriteLine( "\t The method does not have variable arguments!!" );

   
   // Dispatch the method call to the real Object*.
   Object^ returnValue = myType->InvokeMember( myMethodMessage->MethodName, BindingFlags::InvokeMethod, nullptr, myObjectInstance, myMethodMessage->Args );
   Console::WriteLine( "**** End Invoke ****" );
   
   // Build the return message to pass back to the transparent proxy.
   ReturnMessage^ myReturnMessage = gcnew ReturnMessage( returnValue,nullptr,0,nullptr,dynamic_cast<IMethodCallMessage^>(message) );
   return myReturnMessage;
}
// Overriding the Invoke method of RealProxy.
public override IMessage Invoke(IMessage message)
{
   IMethodMessage myMethodMessage = (IMethodMessage)message;

   Console.WriteLine("**** Begin Invoke ****");
   Console.WriteLine("\tType is : " + myType);
   Console.WriteLine("\tMethod name : " +  myMethodMessage.MethodName);

   for (int i=0; i < myMethodMessage.ArgCount; i++)
   {
      Console.WriteLine("\tArgName is : " + myMethodMessage.GetArgName(i));
      Console.WriteLine("\tArgValue is: " + myMethodMessage.GetArg(i));
   }

   if(myMethodMessage.HasVarArgs)
       Console.WriteLine("\t The method have variable arguments!!");
   else
       Console.WriteLine("\t The method does not have variable arguments!!");

   // Dispatch the method call to the real object.
   Object returnValue = myType.InvokeMember( myMethodMessage.MethodName, BindingFlags.InvokeMethod, null,
                                        myObjectInstance, myMethodMessage.Args );
   Console.WriteLine("**** End Invoke ****");

   // Build the return message to pass back to the transparent proxy.
   ReturnMessage myReturnMessage = new ReturnMessage( returnValue, null, 0, null,
       (IMethodCallMessage)message );
   return myReturnMessage;
}
' Overriding the Invoke method of RealProxy.
Public Overrides Function Invoke(message As IMessage) As IMessage
   Dim myMethodMessage As IMethodMessage = CType(message, IMethodMessage)
   
   Console.WriteLine("**** Begin Invoke ****")
   Console.WriteLine(ControlChars.Tab + "Type is : " + myType.ToString())
   Console.WriteLine(ControlChars.Tab + "Method name : " + myMethodMessage.MethodName)
   
   Dim i As Integer
   For i = 0 To myMethodMessage.ArgCount - 1
      Console.WriteLine(ControlChars.Tab + "ArgName is : " + myMethodMessage.GetArgName(i))
      Console.WriteLine(ControlChars.Tab + "ArgValue is: " + myMethodMessage.GetArg(i))
   Next i
   
   If myMethodMessage.HasVarArgs Then
      Console.WriteLine(ControlChars.Tab + " The method have variable arguments!!")
   Else
      Console.WriteLine(ControlChars.Tab + " The method does not have variable arguments!!")
   End If 
   ' Dispatch the method call to the real object.
   Dim returnValue As Object = myType.InvokeMember(myMethodMessage.MethodName, _
                  BindingFlags.InvokeMethod, Nothing, myObjectInstance, myMethodMessage.Args)
   Console.WriteLine("**** End Invoke ****")
   
   ' Build the return message to pass back to the transparent proxy.
   Dim myReturnMessage As New ReturnMessage(returnValue, Nothing, 0, Nothing, _
                                                      CType(message, IMethodCallMessage))
   Return myReturnMessage
End Function 'Invoke

Sicurezza

SecurityPermission
per operare con il codice dell'infrastruttura.for operating with infrastructure code. Valore richiesta: LinkDemand; Valore dell'autorizzazione: InfrastructureDemand value: LinkDemand; Permission value: Infrastructure

Si applica a