WF学习笔记（四）

1、使用WorkflowApplication.OnUnhandledException 处理Code异常 ，用于产生异常的Activity：

    public class ExceptionActivity:CodeActivity

    {

        protected override void Execute(CodeActivityContext context)

        {

            int a = 0;

            double i = 1 / a;

        }

    }

-无UnhandledExceptionAction方式

static void ExceptionActivityWorkflow_None()

        {

            WorkflowApplication instance = new WorkflowApplication(new ExceptionActivityWorkflow());

            instance.Completed = workflowCompleted;

            instance.Aborted = aborted;

            instance.Run();

        }

private static void aborted(WorkflowApplicationAbortedEventArgs obj)

        {

            Console.WriteLine("aborted,实例编号：{1},Reason:{0}", obj.Reason.Message, obj.InstanceId);

        }



        static void workflowCompleted(WorkflowApplicationCompletedEventArgs e)

        {

            Console.WriteLine("完成，实例编号：{0},状态：{1}", e.InstanceId, e.CompletionState.ToString());

        }

不用[OnUnhandledException]方法处理异常时,流程正常结束.调用实例的[completed],状态为[faulted]

-处理Code异常,[UnhandledExceptionAction.Abort]方式

static void ExceptionActivityWorkflow_Abort()

        {

            WorkflowApplication instance = new WorkflowApplication(new ExceptionActivityWorkflow());

            instance.Completed =workflowCompleted;

            instance.OnUnhandledException = unhandledException_Abort;

            instance.Aborted = aborted;



            instance.Run();

        }



        static UnhandledExceptionAction unhandledException_Abort(WorkflowApplicationUnhandledExceptionEventArgs e)

        {

            System.Console.WriteLine("unhandledException_Abort:{0}", e.UnhandledException.Message);

            return UnhandledExceptionAction.Abort;

        }



        private static void aborted(WorkflowApplicationAbortedEventArgs obj)

        {

            Console.WriteLine("aborted,实例编号：{1},Reason:{0}", obj.Reason.Message, obj.InstanceId);

        }



        static void workflowCompleted(WorkflowApplicationCompletedEventArgs e)

        {

            Console.WriteLine("完成，实例编号：{0},状态：{1}", e.InstanceId, e.CompletionState.ToString());

        }

用[UnhandledExceptionAction.Abort]方式处理异常时,流程被结束.不会调用实例的[completed],会调用实例的[Aborted]

-UnhandledExceptionAction.Terminate

static void exceptionActivityWorkflow_Terminate()

        {

            WorkflowApplication instance = new WorkflowApplication(new ExceptionActivityWorkflow());

            instance.Completed = workflowCompleted;

            instance.OnUnhandledException = unhandledException_Terminate;

            instance.Aborted = aborted;

            instance.Run();

        }



        static UnhandledExceptionAction unhandledException_Terminate(WorkflowApplicationUnhandledExceptionEventArgs e)

        {

            System.Console.WriteLine("unhandledException_Abort:{0}", e.UnhandledException.Message);

            return UnhandledExceptionAction.Terminate;

        }

用[UnhandledExceptionAction.Terminate]方式处理异常时,流程正常结束.会调用实例的[completed],但状态为[faulted]