Microsoft Bot Framwork使用數據庫結果

Question

我想讓我的對話框與我的數據庫一起工作。 如果我有我的對話是這樣的：

[Serializable] 
public class QuestionDialog : IDialog<object> 
{ 

    /// <summary> 
    /// Start our response 
    /// </summary> 
    /// <param name="context">The current context</param> 
    /// <returns></returns> 
    public async Task StartAsync(IDialogContext context) 
    { 

     // Move to the next method 
     context.Wait(StepOneAsync); 
    } 

    /// <summary> 
    /// When our message is recieved we execute this delegate 
    /// </summary> 
    /// <param name="context">The current context</param> 
    /// <param name="result">The result object</param> 
    /// <returns></returns> 
    private async Task StepOneAsync(IDialogContext context, IAwaitable<IMessageActivity> result) 
    { 

     // Get our activity 
     var activity = await result; 

     // Ask our first question 
     await context.PostAsync("hi"); 

     // Get our answer 
     context.Done(this); 
    } 
} 

一切正常，我讓我的消息，如預期。然後，我把它改成這樣：

[Serializable] 
public class QuestionDialog : IDialog<object> 
{ 

    // Private properties 
    private IList<QuestionGroup> _questionGroups; 

    /// <summary> 
    /// Start our response 
    /// </summary> 
    /// <param name="context">The current context</param> 
    /// <returns></returns> 
    public async Task StartAsync(IDialogContext context) 
    { 

     try 

     { 

      // Create our service 
      var questionGroupService = new QuestionGroupService(new UnitOfWork<DatabaseContext>()); 

      // Add our question groups 
      this._questionGroups = await questionGroupService.ListAllAsync(); 

      // Move to the next method 
      context.Wait(StepOneAsync); 
     } catch (Exception ex) 
     { 

     } 
    } 

    /// <summary> 
    /// When our message is recieved we execute this delegate 
    /// </summary> 
    /// <param name="context">The current context</param> 
    /// <param name="result">The result object</param> 
    /// <returns></returns> 
    private async Task StepOneAsync(IDialogContext context, IAwaitable<IMessageActivity> result) 
    { 

     // Get our activity 
     var activity = await result; 

     // Ask our first question 
     await context.PostAsync("hi"); 

     // Get our answer 
     context.Done(this); 
    } 
} 

而且它不會去的StepOneAsync方法。任何人都可以看到明顯的事情，爲什麼這不起作用？

Answer 1

確保您的QestionGroup模型標記爲可序列化。

如果你不能讓它序列化，你還是希望自己的對話過程中引用它，你需要去與Bot Framework Technical FAQ的「How can I reference non-serializable services from my C# dialogs?」部分中描述的備選方案之一。

最簡單的是在您的字段中使用NonSerialized屬性。

或者，您可以嘗試通過將反射序列化代理添加到Autofac容器來註冊。在您的global.asax中，請嘗試添加以下代碼：

var builder = new ContainerBuilder(); 

builder.RegisterModule(new ReflectionSurrogateModule()); 

builder.Update(Conversation.Container);