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ILogicalThreadAffinative Interface

  • Reference

Definition

Namespace:
System.Runtime.Remoting.Messaging
Assembly:
mscorlib.dll

Marks an object that can propagate outside of an AppDomain in a LogicalCallContext.

public interface class ILogicalThreadAffinative
public interface ILogicalThreadAffinative
[System.Runtime.InteropServices.ComVisible(true)]
public interface ILogicalThreadAffinative
type ILogicalThreadAffinative = interface
[<System.Runtime.InteropServices.ComVisible(true)>]
type ILogicalThreadAffinative = interface
Public Interface ILogicalThreadAffinative
Attributes
ComVisibleAttribute

Examples

The following code example demonstrates the use of the ILogicalThreadAffinative interface to transmit Principal and Identity Objects to a remote location for identification. To view the code for the HelloServiceClass class used in the sample, see the example for the GetData method. To view the code for the server class used in this sample, see example for the RegisterActivatedServiceType class. To view the code for the client class used in the sample, see the example for the CallContext class.

[Serializable]
public ref class LogicalCallContextData: public ILogicalThreadAffinative
{
private:
   int _nAccesses;
   IPrincipal^ _principal;

public:

   property String^ numOfAccesses 
   {
      String^ get()
      {
         return String::Format( "The identity of {0} has been accessed {1} times.", _principal->Identity->Name, _nAccesses );
      }
   }

   property IPrincipal^ Principal 
   {
      IPrincipal^ get()
      {
         _nAccesses++;
         return _principal;
      }
   }

   LogicalCallContextData( IPrincipal^ p )
   {
      _nAccesses = 0;
      _principal = p;
   }

};

[Serializable]
public class LogicalCallContextData : ILogicalThreadAffinative
{
   int _nAccesses;
   IPrincipal _principal;

   public string numOfAccesses {
      get {
         return String.Format("The identity of {0} has been accessed {1} times.",
                              _principal.Identity.Name,
                              _nAccesses);
      }
   }

   public IPrincipal Principal {
      get {
         _nAccesses ++;
         return _principal;
      }
   }

   public LogicalCallContextData(IPrincipal p) {
      _nAccesses = 0;
      _principal = p;
   }
}

<Serializable()> Public Class LogicalCallContextData
   Implements ILogicalThreadAffinative

   Private _nAccesses As Integer
   Private _principal As IPrincipal
   
   
   Public ReadOnly Property numOfAccesses() As String
      Get
         Return [String].Format("The identity of {0} has been accessed {1} times.", _principal.Identity.Name, _nAccesses)
      End Get
   End Property
   
   
   Public ReadOnly Property Principal() As IPrincipal
      Get
         _nAccesses += 1
         Return _principal
      End Get
   End Property
   
   
   Public Sub New(p As IPrincipal)
      _nAccesses = 0
      _principal = p
   End Sub

End Class

Remarks

When a remote method call is made to an object in another AppDomain, the current CallContext class generates a LogicalCallContext that travels along with the call to the remote location. Only objects that expose the ILogicalThreadAffinative interface and are stored in the CallContext are propagated outside the AppDomain. Objects that do not support this interface are not transmitted in LogicalCallContext instances with remote method calls.

Applies to