ITransportHeaders.Item[Object] Eigenschaft

Definition

Namespace:

System.Runtime.Remoting.Channels

Assembly:

mscorlib.dll

Ruft einen Transportheader ab, der dem angegebenen Schlüssel zugeordnet ist, oder legt diesen fest.

public:
 property System::Object ^ default[System::Object ^] { System::Object ^ get(System::Object ^ key); void set(System::Object ^ key, System::Object ^ value); };

public object this[object key] { get; set; }

public object this[object key] { [System.Security.SecurityCritical] get; [System.Security.SecurityCritical] set; }

member this.Item(obj) : obj with get, set

[<get: System.Security.SecurityCritical>]
[<set: System.Security.SecurityCritical>]
member this.Item(obj) : obj with get, set

Default Public Property Item(key As Object) As Object

Parameter

key

Object

Der Schlüssel, dem der angeforderte Transportheader zugeordnet ist.

Eigenschaftswert

Object

Ein dem angegebenen Schlüssel zugeordneter Transportheader.

Attribute

SecurityCriticalAttribute

Ausnahmen

SecurityException

Der direkte Aufrufer verfügt nicht über die Berechtigung für die Infrastruktur.

Beispiele

#using <System.Runtime.Remoting.dll>
#using <System.dll>
#using <ITransportHeaders_3_Share.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Tcp;
ref class MyITransportHeadersClass: public ITransportHeaders
{
private:

   int myInt;
   array<DictionaryEntry>^myDictionaryEntry;

public:
   MyITransportHeadersClass()
   {
      myInt = 0;
      myDictionaryEntry = gcnew array<DictionaryEntry>(10);
   }


   property Object^ Item [Object^]
   {

      // Implement the 'Item' property.
     virtual Object^ get( Object^ myKey )
      {
         if ( myKey != nullptr )
         {
            for ( int i = 0; i <= myInt; i++ )
               if ( myDictionaryEntry[ i ].Key == myKey )
                              return myDictionaryEntry[ i ].Value;
         }

         return nullptr;
      }

      virtual void set( Object^ myKey, Object^ value )
      {
         myDictionaryEntry[ myInt ] = DictionaryEntry(myKey,value);
         myInt++;
      }

   }

   // Implement the 'GetEnumerator' method.
   virtual IEnumerator^ GetEnumerator()
   {
      Hashtable^ myHashtable = gcnew Hashtable;
      for ( int j = 0; j < myInt; j++ )
         myHashtable->Add( myDictionaryEntry[ j ].Key, myDictionaryEntry[ j ].Value );
      return myHashtable->GetEnumerator();
   }

};

int main()
{
   try
   {
      
      // Create and register a 'TcpChannel' object.
      TcpChannel^ myTcpChannel = gcnew TcpChannel( 8085 );
      ChannelServices::RegisterChannel( myTcpChannel, false );
      RemotingConfiguration::RegisterWellKnownServiceType( MyHelloServer::typeid, "SayHello", WellKnownObjectMode::SingleCall );
      
      // Create an instance of 'myITransportHeadersObj'.
      MyITransportHeadersClass^ myITransportHeadersObj = gcnew MyITransportHeadersClass;
      ITransportHeaders^ myITransportHeaders = dynamic_cast<ITransportHeaders^>(myITransportHeadersObj);
      
      // Add items to the header list.
      myITransportHeaders->default[ "Header1" ] = "TransportHeader1";
      myITransportHeaders->default[ "Header2" ] = "TransportHeader2";
      
      // Get the 'ITranportHeader' item value with key 'Header2'.
      Console::WriteLine( "ITransport Header item value with key 'Header2' is :{0}", myITransportHeaders->default[ "Header2" ] );
      IEnumerator^ myEnumerator = myITransportHeaders->GetEnumerator();
      Console::WriteLine( "     -KEY-      -VALUE-" );
      while ( myEnumerator->MoveNext() )
      {
         
         // Display the 'Key' and 'Value' of the current element.
         Object^ myEntry = myEnumerator->Current;
         DictionaryEntry myDictionaryEntry =  *dynamic_cast<DictionaryEntry^>(myEntry);
         Console::WriteLine( "   {0}:   {1}", myDictionaryEntry.Key, myDictionaryEntry.Value );
      }
      Console::WriteLine( "Hit <enter> to exit..." );
      Console::ReadLine();
   }
   catch ( Exception^ ex ) 
   {
      Console::WriteLine( "The following exception is raised on the server side: {0}", ex->Message );
   }

}

using System;
using System.Collections;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

class MyITransportHeadersClass : ITransportHeaders
{
   int myInt = 0;
   DictionaryEntry[] myDictionaryEntry = new DictionaryEntry[10];
   // Implement the 'Item' property.
   object ITransportHeaders.this[object myKey]
   {
      get
      {
         if(myKey != null)
         {
            for(int i = 0; i <= myInt; i++)
               if(myDictionaryEntry[i].Key == myKey)
                  return myDictionaryEntry[i].Value;
         }
         return 0;
      }
      set
      {
         myDictionaryEntry[myInt] = new DictionaryEntry(myKey, value);
         myInt++;
      }
   }
   // Implement the 'GetEnumerator' method.
   IEnumerator ITransportHeaders.GetEnumerator()
   {
      Hashtable myHashtable = new Hashtable();
      for(int j = 0; j < myInt; j++)
         myHashtable.Add(myDictionaryEntry[j].Key, myDictionaryEntry[j].Value);
      return myHashtable.GetEnumerator();
   }

   public static void Main()
   {
      try
      {
         // Create and register a 'TcpChannel' object.
         TcpChannel myTcpChannel = new TcpChannel(8085);
         ChannelServices.RegisterChannel(myTcpChannel);
         RemotingConfiguration.RegisterWellKnownServiceType(typeof(MyHelloServer), "SayHello",
            WellKnownObjectMode.SingleCall);
         // Create an instance of 'myITransportHeadersObj'.
         MyITransportHeadersClass myITransportHeadersObj = new MyITransportHeadersClass();
         ITransportHeaders myITransportHeaders = (ITransportHeaders)myITransportHeadersObj;
         // Add items to the header list.
         myITransportHeaders["Header1"] = "TransportHeader1";
         myITransportHeaders["Header2"] = "TransportHeader2";
         // Get the 'ITranportHeader' item value with key 'Header2'.
         Console.WriteLine("ITransport Header item value with key 'Header2' is :"
            +myITransportHeaders["Header2"]);
         IEnumerator myEnumerator = myITransportHeaders.GetEnumerator();
         Console.WriteLine( "     -KEY-      -VALUE-" );
         while ( myEnumerator.MoveNext() )
         {
            // Display the 'Key' and 'Value' of the current element.
            object myEntry = myEnumerator.Current;
            DictionaryEntry myDictionaryEntry = (DictionaryEntry)myEntry;
            Console.WriteLine("   {0}:   {1}", myDictionaryEntry.Key, myDictionaryEntry.Value);
         }
         Console.WriteLine("Hit <enter> to exit...");
         Console.ReadLine();
      }
      catch(Exception ex)
      {
         Console.WriteLine("The following exception is raised on the server side: " +ex.Message);
      }
   }
}

Imports System.Collections
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp

Class MyITransportHeadersClass
   Implements ITransportHeaders
   Private myInt As Integer = 0
   Private myDictionaryEntry(9) As DictionaryEntry
   ' Implement the 'Item' property.
   Property ITransportHeaders(myKey As Object) As Object Implements ITransportHeaders.Item
      Get
         If Not (myKey Is Nothing) Then
            Dim i As Integer
            For i = 0 To myInt
               If myDictionaryEntry(i).Key = myKey Then
                  Return myDictionaryEntry(i).Value
               End If
            Next i
         End If
         Return 0
      End Get
      Set
         myDictionaryEntry(myInt) = New DictionaryEntry(myKey, value)
         myInt += 1
      End Set
   End Property

   ' Implement the 'GetEnumerator' method.
   Function GetEnumerator() As IEnumerator  Implements ITransportHeaders.GetEnumerator
      Dim myHashtable As New Hashtable()
      Dim j As Integer
      For j = 0 To myInt - 1
         myHashtable.Add(myDictionaryEntry(j).Key, myDictionaryEntry(j).Value)
      Next j
      Return myHashtable.GetEnumerator()
   End Function 'ITransportHeaders.GetEnumerator

   Public Shared Sub Main()
      Try
         ' Create and register a 'TcpChannel' object.
         Dim myTcpChannel As New TcpChannel(8085)
         ChannelServices.RegisterChannel(myTcpChannel)
         RemotingConfiguration.RegisterWellKnownServiceType(GetType(MyHelloServer), "SayHello", _
                                                         WellKnownObjectMode.SingleCall)
         ' Create an instance of 'myITransportHeadersObj'.
         Dim myITransportHeadersObj As New MyITransportHeadersClass()
         Dim myITransportHeaders As ITransportHeaders = _
                                              CType(myITransportHeadersObj, ITransportHeaders)
         ' Add items to the header list.
         myITransportHeaders("Header1") = "TransportHeader1"
         myITransportHeaders("Header2") = "TransportHeader2"
         ' Get the 'ITranportHeader' item value with key 'Header2'.
         Console.WriteLine("ITransport Header item value with key 'Header2' is :" + _
                                                        myITransportHeaders("Header2"))
         Dim myEnumerator As IEnumerator = myITransportHeaders.GetEnumerator()
         Console.WriteLine("     -KEY-      -VALUE-")
         While myEnumerator.MoveNext()
            ' Display the 'Key' and 'Value' of the current element.
            Dim myEntry As Object = myEnumerator.Current
            Dim myDictionaryEntry As DictionaryEntry = CType(myEntry, DictionaryEntry)
            Console.WriteLine("   {0}:   {1}", myDictionaryEntry.Key, myDictionaryEntry.Value)
         End While
         Console.WriteLine("Hit <enter> to exit...")
         Console.ReadLine()
      Catch ex As Exception
         Console.WriteLine("The following exception is raised on the server side: " + ex.Message)
      End Try
   End Sub
End Class

Hinweise

Wenn ein gespeicherter Header auf null"Festgelegt" festgelegt ist, wird das Schlüsselwertpaar entfernt.