How to send message after inactivity time with Bot Framework C# SDK?

Question

I'm using the C# SDK for Bot Framework to develop a bot and i want my bot send a satisfaction message after a time without activity from the client.

I tried with Task but at first Task are not serializable so i can't store the task to Dispose it if i recieve a new message, and second PrompChoice throw a 'Microsoft.Bot.Builder.Internals.Fibers.InvalidNeedException' with the message : " invalid need: expected Call, have Wait"

I tried to replace my PromptChoice with just a context.sendAsync("Hi"), no exception here but message never be sent to the emulator.

If somebody have an idea on the way to do this, i would be grateful.

EDIT:

i use this sample to do the job:

            using (var scope = DialogModule.BeginLifetimeScope(Conversation.Container, message))
            {
                var botData = scope.Resolve<IBotData>();
                await botData.LoadAsync(CancellationToken.None);
                IDialogTask task = scope.Resolve<IDialogTask>();

                //interrupt the stack
                var dialog = new InactivityDialog();
                task.Call(dialog.Void<object, IMessageActivity>(), null);
                //stack.Post<InactivityDialog>(dialog, (c, item) => { return Task.CompletedTask; });
                await task.PollAsync(CancellationToken.None);

                //flush dialog stack
                await botData.FlushAsync(CancellationToken.None);

            }

and this in my static messageController:

    var builder = new ContainerBuilder();
builder.Register(c => ((ClaimsIdentity)HttpContext.Current.User.Identity).GetCredentialsFromClaims())
           .AsSelf()
           .InstancePerLifetimeScope();
builder.Update(Conversation.Container);

But the HttpContext.Current is null when it try to resolve IBotData from the scope

Answer 1

That functionality isn't in the bot framework right now. You would have to create your own custom code where you save the conversation information & update your own timer if there's been activity.

https://github.com/Microsoft/BotBuilder/issues/837