直接 Reply Message 給 User

ReplyToActivityAsync.cs

public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
{
	if (activity.Type == ActivityTypes.Message)
	{
		var replyMessage = $"你輸入了 **{activity.Text}**，共輸入了**{activity.Text.Length}**個字";
		//建立要回覆的 Activity 
		var reply = activity.CreateReply(replyMessage);
		//建立連線
		var connector = new ConnectorClient(new Uri(activity.ServiceUrl));
		await connector.Conversations.ReplyToActivityAsync(reply);
	}
	else
	{
		await HandleSystemMessage(activity);
	}
	var response = Request.CreateResponse(HttpStatusCode.OK);
	return response;
}