IMethodMessage.ArgCount Property

Reference

Definition

Namespace:: System.Runtime.Remoting.Messaging

Assembly:: mscorlib.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets the number of arguments passed to the method.

public:
 property int ArgCount { int get(); };

public int ArgCount { get; }

public int ArgCount { [System.Security.SecurityCritical] get; }

member this.ArgCount : int

[<get: System.Security.SecurityCritical>]
member this.ArgCount : int

Public ReadOnly Property ArgCount As Integer

Property Value

Int32

The number of arguments passed to the method.

Attributes: SecurityCriticalAttribute

Exceptions

SecurityException

The immediate caller makes the call through a reference to the interface and does not have infrastructure permission.

Examples

The following example code shows a custom proxy that overrides RealProxy.Invoke in order to write the message information to the console, using the ArgCount property to iterate through the 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

Applies to

Proizvod	Verzije
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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