如何解決我的Bot Framework MessagesController中的當前對話框堆棧？

Question

在我的消息控制器中，我想檢查一個特定的對話框是否在傳入消息的堆棧中，以便我可以禁止某些條件行爲。我試圖解決IDialogStack按this answer，就像這樣：

public async Task<HttpResponseMessage> Post([FromBody] Activity incomingMessage) 
    { 
     try 
     { 
      if (incomingMessage.Type == ActivityTypes.Message) 
      { 
       using (var scope = DialogModule.BeginLifetimeScope(Conversation.Container, activity)) 
       { 
        var stack = scope.Resolve<IDialogStack>(); 
       } 
       ... 

這裏是正在註冊在我的Global.asax模塊：

private void RegisterBotModules() 
    { 
     var builder = new ContainerBuilder(); 

     builder.RegisterModule(new DialogModule()); 
     builder.RegisterModule(new ReflectionSurrogateModule()); 
     builder.RegisterModule(new DialogModule_MakeRoot()); 

     builder.RegisterModule<GlobalMessageHandler>(); 

     builder.RegisterModule(new AzureModule(Assembly.GetExecutingAssembly())); 

     var store = new TableBotDataStore(/*connection string*/); 
     builder.Register(c => store) 
      .Keyed<IBotDataStore<BotData>>(AzureModule.Key_DataStore) 
      .AsSelf() 
      .SingleInstance(); 

     builder.Register(c => new CachingBotDataStore(store, CachingBotDataStoreConsistencyPolicy.ETagBasedConsistency)) 
      .As<IBotDataStore<BotData>>() 
      .AsSelf() 
      .InstancePerLifetimeScope(); 

     builder.Update(Conversation.Container); 
     var config = GlobalConfiguration.Configuration; 
     config.DependencyResolver = new AutofacWebApiDependencyResolver(Conversation.Container); 
    } 

不過，我得到以下異常：

{「激活特定註冊過程中發生錯誤，詳情請參閱內部例外註冊：Activator = IDialogTask（DelegateActivator），Services = [Microsoft.Bot.B uilder.Dialogs.Internals.IDialogStack，Microsoft.Bot.Builder.Dialogs.Internals.IDialogTask]，Lifetime = Autofac.Core.Lifetime.CurrentScopeLifetime，Sharing = Shared，Ownership = OwnedByLifetimeScope --->對象引用未設置爲一個東西。 （詳情請參見內部異常。） 「

隨着內異常：

」對象引用不設置爲一個對象的一個​​實例「

」 在Autofac.Core.Resolving。 InstanceLookup.Activate（IEnumerable 1 parameters)\r\n at Autofac.Core.Resolving.InstanceLookup.<Execute>b__5_0()\r\n at Autofac.Core.Lifetime.LifetimeScope.GetOrCreateAndShare(Guid id, Func 1 creator）\ r \ n at Autofac.Core.Resolving.InstanceLookup.Execute（）\ r \ n at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance（ISharingLifetimeScope currentOperationScope，IComponentRegistration registration，IEnumerable 1 parameters)\r\n at Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable 1 parameters ）\ r \ n在Autofac.Core.Lifetime.Lifeti在Autofac.ResolutionExtensions.ResolveService（IComponentContext上下文，服務服務，IEnumerable 1 parameters)\r\n at Autofac.ResolutionExtensions.Resolve[TService](IComponentContext context, IEnumerable 1個參數）上\ r \ n \ Autofac.ResolutionExtensions.Resolve \ TService \ r \ n下的\ r \ n 1個參數，對象&實例） ]（IComponentContext上下文）\ r \ n在D：\ Source \ Repos \ QUO_Cognitive_Quoting \ Src \ CQBot \ Controllers \ MessagesController.cs中的Progressive.CQBot.Controllers.MessagesController.d__0.MoveNext（）中：第33行「

鏈接的答案中的建議是否已棄用？有沒有我缺少的模塊註冊？我會感謝任何方向！

Answer 1

BotData需要在解析IDialogStack之前加載。

請嘗試以下方法：

using (var scope = DialogModule.BeginLifetimeScope(Conversation.Container, activity)) 
{ 
    var botData = scope.Resolve<IBotData>(); 
    await botData.LoadAsync(new System.Threading.CancellationToken()); 

    var stack = scope.Resolve<IDialogStack>(); 
}