CallContext.SetData Method (String, Object)

 
System_CAPS_noteNote

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Stores a given object and associates it with the specified name.

Namespace:   System.Runtime.Remoting.Messaging
Assembly:  mscorlib (in mscorlib.dll)

[SecurityCriticalAttribute]
public static void SetData(
	string name,
	object data
)

Parameters

name
Type: System.String

The name with which to associate the new item in the call context.

data
Type: System.Object

The object to store in the call context.

Exception Condition
SecurityException

The immediate caller does not have infrastructure permission.

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

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Messaging;
using System.Security.Principal;
using System.Security.Permissions;

public class ClientClass {
   [PermissionSet(SecurityAction.LinkDemand)]
   public static void Main() {

      GenericIdentity ident = new GenericIdentity("Bob");
      GenericPrincipal prpal = new GenericPrincipal(ident, 
                                                    new string[] {"Level1"});
      LogicalCallContextData data = new LogicalCallContextData(prpal);      

      //Enter data into the CallContext
      CallContext.SetData("test data", data);


      Console.WriteLine(data.numOfAccesses);

      ChannelServices.RegisterChannel(new TcpChannel());

      RemotingConfiguration.RegisterActivatedClientType(typeof(HelloServiceClass),
                                                        "tcp://localhost:8082");

      HelloServiceClass service = new HelloServiceClass();

      if(service == null) {
          Console.WriteLine("Could not locate server.");
          return;
      }


      // call remote method
      Console.WriteLine();
      Console.WriteLine("Calling remote object");
      Console.WriteLine(service.HelloMethod("Caveman"));
      Console.WriteLine(service.HelloMethod("Spaceman"));
      Console.WriteLine(service.HelloMethod("Bob"));
      Console.WriteLine("Finished remote object call");
      Console.WriteLine();

      //Extract the returned data from the call context
      LogicalCallContextData returnedData = 
         (LogicalCallContextData)CallContext.GetData("test data");

      Console.WriteLine(data.numOfAccesses);
      Console.WriteLine(returnedData.numOfAccesses);
   }
}

SecurityPermission

For operating with infrastructure code. Demand value: SecurityAction.LinkDemand; Permission value: SecurityPermissionFlag.Infrastructure

.NET Framework
Available since 1.1
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