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ProxyAttribute Constructor

Initializes a new instance of the ProxyAttribute class with default values.

[Visual Basic]
Public Sub New()
[C#]
public ProxyAttribute();
[C++]
public: ProxyAttribute();
[JScript]
public function ProxyAttribute();

Example

[Visual Basic] 
<SecurityPermissionAttribute(SecurityAction.Demand, Flags := SecurityPermissionFlag.Infrastructure), _
AttributeUsage(AttributeTargets.Class)>  _
Public Class MyProxyAttribute
   Inherits ProxyAttribute

   Public Sub New()
   End Sub 'New

   ' Create an instance of ServicedComponentProxy
   Public Overrides Function CreateInstance(serverType As Type) As MarshalByRefObject
      Return MyBase.CreateInstance(serverType)
   End Function 'CreateInstance

   Public Overrides Function CreateProxy(objRef1 As ObjRef, serverType As Type, _
               serverObject As Object, serverContext As Context) As RealProxy
      Dim myCustomProxy As New MyProxy(serverType)
      If Not (serverContext Is Nothing) Then
         RealProxy.SetStubData(myCustomProxy, serverContext)
      End If
      If Not serverType.IsMarshalByRef And serverContext Is Nothing Then
         Throw New RemotingException("Bad Type for CreateProxy")
      End If
      Return myCustomProxy
   End Function 'CreateProxy
End Class 'MyProxyAttribute

<MyProxyAttribute()> _
Public Class CustomServer
   Inherits ContextBoundObject

   Public Sub New()
      Console.WriteLine("CustomServer Base Class constructor called")
   End Sub 'New

   Public Sub HelloMethod(str As String)
      Console.WriteLine("HelloMethod of Server is invoked with message : " + str)
   End Sub 'HelloMethod
End Class 'CustomServer

[C#] 
[AttributeUsage(AttributeTargets.Class)]
[SecurityPermissionAttribute(SecurityAction.Demand, Flags=SecurityPermissionFlag.Infrastructure)]
public class MyProxyAttribute : ProxyAttribute
{
   public MyProxyAttribute()
   {
   }
   // Create an instance of ServicedComponentProxy
   public override MarshalByRefObject CreateInstance(Type serverType)
   {  
      return base.CreateInstance(serverType);
   }
   public override RealProxy CreateProxy(ObjRef objRef1,
      Type serverType,
      object serverObject,
      Context serverContext)
   {
      MyProxy myCustomProxy = new MyProxy(serverType);
      if(serverContext != null)
      {
         RealProxy.SetStubData(myCustomProxy,serverContext);
      }
      if((!serverType.IsMarshalByRef)&&(serverContext == null))
      {
         throw new RemotingException("Bad Type for CreateProxy");
      }
      return myCustomProxy;
   }
}

[MyProxyAttribute]
public class CustomServer :ContextBoundObject
{
   public CustomServer()
   {
      Console.WriteLine("CustomServer Base Class constructor called");
   }
   public void HelloMethod(string str)
   {
      Console.WriteLine("HelloMethod of Server is invoked with message : " + str);
   }
}

[C++] 
[AttributeUsage(AttributeTargets::Class)]
[System::Security::Permissions::SecurityPermissionAttribute(System::Security::Permissions::SecurityAction::Demand, Flags=SecurityPermissionFlag::Infrastructure)] 

public __gc class MyProxyAttribute : public ProxyAttribute 
{
public:
    MyProxyAttribute() 
    {
    }
    // Create an instance of ServicedComponentProxy
public:
    MarshalByRefObject* CreateInstance(Type* serverType) 
    {  
        return ProxyAttribute::CreateInstance(serverType);
    }
public:
    RealProxy* CreateProxy(ObjRef* objRef1,
        Type* serverType,
        Object* serverObject,
        Context* serverContext) 
    {
        MyProxy* myCustomProxy = new MyProxy(serverType);
        if (serverContext != 0) 
        {
            RealProxy::SetStubData(myCustomProxy, serverContext);
        }
        if ((!serverType->IsMarshalByRef)&&(serverContext == 0)) {
            throw new RemotingException(S"Bad Type for CreateProxy");
        }
        return myCustomProxy;
    }
};

[MyProxyAttribute]
__gc class CustomServer : public ContextBoundObject 
{
public:
    CustomServer() 
    {
        Console::WriteLine(S"CustomServer Base Class constructor called");
    }
public:
    void HelloMethod(String* str) {
        Console::WriteLine(S"HelloMethod of Server is invoked with message : {0}", str);
    }
};

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

ProxyAttribute Class | ProxyAttribute Members | System.Runtime.Remoting.Proxies Namespace

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