DnsPermission::Union Method

private:
   void MyUnion()
   {
      // Create a DnsPermission instance that is the union of the current DnsPermission 
      // instance and the specified DnsPermission instance.
      DnsPermission^ permission = dynamic_cast<DnsPermission^>(dnsPermission1->Union( dnsPermission2 ));
      // Print the attributes and the values of the union instance of DnsPermission.
      PrintKeysAndValues( permission->ToXml()->Attributes );
   }

public:
   void useDns()
   {
      // Create a DnsPermission instance.
      dnsPermission1 = gcnew DnsPermission( PermissionState::Unrestricted );
      dnsPermission2 = gcnew DnsPermission( PermissionState::None );
      // Check for permission.
      dnsPermission1->Demand();
      dnsPermission2->Demand();
      Console::WriteLine( "Attributes and Values of first DnsPermission instance :" );
      PrintKeysAndValues( dnsPermission1->ToXml()->Attributes );
      Console::WriteLine( "Attributes and Values of second DnsPermission instance :" );
      PrintKeysAndValues( dnsPermission2->ToXml()->Attributes );
      Console::WriteLine( "Union of both instances : " );
      MyUnion();
      Console::WriteLine( "Intersection of both instances : " );
      MyIntersection();
   }

private:
   void PrintKeysAndValues( Hashtable^ myList )
   {
      // Get the enumerator that can iterate through the hash tabble.
      IDictionaryEnumerator^ myEnumerator = myList->GetEnumerator();
      Console::WriteLine( "\t-KEY-\t-VALUE-" );
      while ( myEnumerator->MoveNext() )
      {
         Console::WriteLine( "\t {0}:\t {1}", myEnumerator->Key, myEnumerator->Value );
      }
      Console::WriteLine();
   }

   void MyUnion() 
   {
      // Create a DnsPermission instance that is the union of the current DnsPermission
      // instance and the specified DnsPermission instance.
      DnsPermission* permission = dynamic_cast<DnsPermission*>(dnsPermission1->Union(dnsPermission2));
      // Print the attributes and the values of the union instance of DnsPermission.
      PrintKeysAndValues(permission->ToXml()->Attributes);
   }
public:
   void useDns() 
   {
      // Create a DnsPermission instance.
      dnsPermission1 = new DnsPermission(PermissionState::Unrestricted);
      dnsPermission2 = new DnsPermission(PermissionState::None);
      // Check for permission.
      dnsPermission1->Demand();
      dnsPermission2->Demand();
      Console::WriteLine(S"Attributes and Values of first DnsPermission instance :");
      PrintKeysAndValues(dnsPermission1->ToXml()->Attributes);
      Console::WriteLine(S"Attributes and Values of second DnsPermission instance :");
      PrintKeysAndValues(dnsPermission2->ToXml()->Attributes);
      Console::WriteLine(S"Union of both instances : ");
      MyUnion();
      Console::WriteLine(S"Intersection of both instances : ");
      MyIntersection();
   }

private:
   void PrintKeysAndValues(Hashtable* myList) 
   {
      // Get the enumerator that can iterate through the hash tabble.
      IDictionaryEnumerator* myEnumerator = myList->GetEnumerator();
      Console::WriteLine(S"\t-KEY-\t-VALUE-");
      while (myEnumerator->MoveNext())
         Console::WriteLine(S"\t {0}:\t {1}", 
         myEnumerator->Key, myEnumerator->Value);
      Console::WriteLine();
   }