为何“状态机”的HandleExternalEvent事件无法触发？
问题
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大家好，我初学WF，创建了状态机一个WorkFlow，宿主是一个控制台程序，代码如下：
namespace WorkFlowStateConsoleApp { class Program { static void Main(string[] args) { using (WorkflowRuntime runtime = new WorkflowRuntime()) { AutoResetEvent flag = new AutoResetEvent(false); WorkflowInstance instance = runtime.CreateWorkflow(typeof(CSharpStateWorkFlow.ShoppingWorkState)); ActivityInterface impl = new InterfaceImpl(); ExternalDataExchangeService ec = new ExternalDataExchangeService(); runtime.AddService(ec); ec.AddService(impl); runtime.StartRuntime(); instance.Start(); flag.WaitOne(); } } } }
接口和实现类定义如下：
接口：
namespace CSharpStateWorkFlow.ActivityInterfaces { [ExternalDataExchange] public interface ActivityInterface { event EventHandler<ExternalDataEventArgs> OnMenuShow; void MenuShow(); } }
实现类：
namespace CSharpStateWorkFlow.ImpleActivityInterfaces { public class InterfaceImpl:ActivityInterfaces.ActivityInterface { public event EventHandler<System.Workflow.Activities.ExternalDataEventArgs> OnMenuShow; public void MenuShow() { if (OnMenuShow != null) { OnMenuShow(null, null); } } } }
ChooseItemEvent包含一个handleExternalEventAcivity对象，其中这样绑定：
结果控制台只运行“请输入钱”，我输入了1000，回车结果什么也没有了……。
为何自定义的事件代码（在控制台程序中）不触发了呢？谢谢！
全部回复
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stateInitializationActivity1展开：
ChooseItemEvent展开：
全部代码：
namespace CSharpStateWorkFlow { public partial class ShoppingWorkState : StateMachineWorkflowActivity { public Dictionary<int, double> items = new Dictionary<int, double>(); public double Money { get; set; } public int ItemId { get; set; } public bool IsContinue { get; set; } private void InitMoney(object sender, EventArgs e) { Console.WriteLine("请添加钱："); Money += double.Parse(Console.ReadLine()); } private void ReAddMoney(object sender, EventArgs e) { Console.WriteLine("加入的钱不足，请重新添加！"); Money += double.Parse(Console.ReadLine()); } private void ChooseItem(object sender, EventArgs e) { Console.WriteLine("请购物："); ItemId = int.Parse(Console.ReadLine()); Money -= items[ItemId]; Console.WriteLine("您的剩余金额：" + Money); } private void ContinueIncreaseMoney(object sender, EventArgs e) { Console.WriteLine("是否继续？"); string flag = Console.ReadLine(); flag = flag.Trim(); IsContinue = (flag == "Y" || flag == "y"); } } }
