How can I access Bot Framework ConversationData outside of a dialog like in messages controller?

问题

In a dialog within my bot, I store a flag value in the ConversationData like so:

context.ConversationData.SetValue("SomeFlag", true);

Later, I need to check that flag in my MessagesController, before the message is dispatched to a dialog. As per this previous question I tried retrieving the ConversationData in via the StateClient like this:

public async Task<HttpResponseMessage> Post([FromBody] Activity incomingMessage)
{
    StateClient stateClient = incomingMessage.GetStateClient();
    BotData userData = await stateClient.BotState.GetConversationDataAsync(message.ChannelId, message.Conversation.Id);
    bool finishedQuote = userData.GetProperty<bool>("SomeFlag");
    //...
    // do conditional logic, then dispatch to a dialog as normal
}

However, at runtime, the userData variable holds a BotData object where userData.Data is null, and I'm unable to retrieve any stored flags via GetProperty. I don't see anything in the relevant documentation that helps shed light on this issue - what might I be doing wrong here? Is there something I'm misunderstanding?

回答1:

The following should work for what you need:

if (activity.Type == ActivityTypes.Message)
{

    var message = activity as IMessageActivity;
    using (var scope = DialogModule.BeginLifetimeScope(Conversation.Container, message))
    {
        var botDataStore = scope.Resolve<IBotDataStore<BotData>>();
        var key = Address.FromActivity(message);

        ConversationReference r = new ConversationReference();
        var userData = await botDataStore.LoadAsync(key, BotStoreType.BotUserData, CancellationToken.None);

        //you can get/set UserData, ConversationData, or PrivateConversationData like below
        //set state data
        userData.SetProperty("key 1", "value1");
        userData.SetProperty("key 2", "value2");
        //get state data
        userData.GetProperty<string>("key 1");
        userData.GetProperty<string>("key 2");

        await botDataStore.SaveAsync(key, BotStoreType.BotUserData, userData, CancellationToken.None);
        await botDataStore.FlushAsync(key, CancellationToken.None);
    }
    await Conversation.SendAsync(activity, () => new Dialogs.RootDialog());
}

回答2:

Initialize BotState object with StateClient as below. Try the below code

   public static T GetStateData<T>(Activity activity, string key)
    {
        BotState botState = new BotState(activity.GetStateClient());
        BotData botData = botState.GetConversationData(activity.ChannelId, activity.Conversation.Id);
        return botData.GetProperty<T>(key);
    }

来源：https://stackoverflow.com/questions/46085614/how-can-i-access-bot-framework-conversationdata-outside-of-a-dialog-like-in-mess

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