© 2004 Microsoft Corporation. All rights reserved.

[ Transaction(TransactionOption.Required) ]
public class MyTxCfgClass : ServicedComponent
{
  public MyTxCfgClass() {}
  public void DoTxWork()
  {
    // set done bit so transaction ends at
    // end of method
    ContextUtil.DeactivateOnReturn = true;

    // clear happy bit so transaction aborts
    // if exception is thrown
    ContextUtil.MyTransactionVote = TransactionVote.Abort;

    ... // use ADO.NET to work with databases

    // set happy bit so transaction can commit
    ContextUtil.MyTransactionVote = TransactionVote.Commit;
  }
}

using System.EnterpriseServices;

[assembly: ApplicationName("MyApp")]
[assembly: ApplicationActivation(ActivationOption.Library)]
[assembly: ApplicationAccessControl(false,  
           AccessChecksLevel = 
             AccessChecksLevelOption.ApplicationComponent)]

namespace ESExample
{
  [ Synchronization(SynchronizationOption.Required) ]
  public class MyCfgClass : ServicedComponent
  {
    public MyCfgClass() {}
    public string GetCallerName()
    {
      return SecurityCallContext.CurrentCall.OriginalCaller.AccountName;
    }
  }
}

[ Synchronization(SynchronizationOption.Required) ]
public class MyCfgClass : ServicedComponent
{
  public MyCfgClass() {}
  // executes in object's context
  public void One() { ... }
  // executes in caller's context
  public static void Two() { ... }
  // executes in object's context
  public string Three { ... }
  // executes in caller's context
  public static string Four { ... }
}

public class Client
{
  public static void Main(string[] args)
  {
    MyCfgClass cc = new MyCfgClass();
    // executes in object's context
    cc.One();
    // executes in caller's context
    MyCfgClass.Two();
    // executes in object's context
    cc.Three = "red pill";
    // executes in caller's context
    MyCfgClass.Four = "blue pill";
  }
}