Handling Message Attachment on Microsoft Bot Framework

Question

im trying to handle messages that have attachments, im getting a The remote server returned an error: (400) Bad Request. error. How can i handle this the right way?

MessageController

        if (activity.Type == ActivityTypes.Message)
        {
            try
            {
                ConnectorClient connector = new ConnectorClient(new Uri(activity.ServiceUrl));
                // Check in QnA Dialog
                await Conversation.SendAsync(activity, () => new QnADialog());
            }
            catch (Exception ex)
            {

                throw;
            }

        }
        else
        {
            HandleSystemMessage(activity);
        }
        var response = Request.CreateResponse(HttpStatusCode.OK);
        return response;

Answer 1

You can directly check the attachments count on the activity object and do the following for example:

if (activity.Type == ActivityTypes.Message)
{
    try
    {
        if (activity.Attachments.Count > 0)
        {
            var replyNoAttachmentAllowed = activity.CreateReply("This QnA bot cannot handle attachments, please send only text");
            await context.PostAsync(replyNoAttachmentAllowed);
        }
        else
        {
            // Check in QnA Dialog
            await Conversation.SendAsync(activity, () => new QnADialog());
        }
    }
    catch (Exception ex)
    {

        throw;
    }

}