在bot channel registration 裡面增加Direct Line Channel

透過在 Bot Channel Registration 裡面選擇 channel，然後按下Configure Direct Line

在Configure Direct Line的畫面，可以看到有2組secret key，這兩組是用來和Direct Line 連接的重要資訊，透過按下Show，然後把對應的key複製下來。

在程式裡面使用Direct Line Api - 這邊將以console程式為例子

建立一個新的console project，并且安裝Direct Line 的Library

開啓一個新的console project，然後透過nuget安裝一個套件叫做：Microsoft.Bot.Connector.Direct Line

透過設定檔取得Direct Line Channel的Secret Key和BotId

private static string directLineSecret = 
	ConfigurationManager.AppSettings["DirectLineSecret"];

private static string botId = ConfigurationManager.AppSettings["BotId"];

private static string fromUser = "DirectLineSampleClientUser";

建立送訊息給chatbot以及從chatbot取得回復的兩個方法

private static async Task StartBotConversation()
{
	DirectLineClient client = new DirectLineClient(directLineSecret);

	var conversation = await client.Conversations.StartConversationAsync();

	new System.Threading.Thread(async () => await 
		ReadBotMessagesAsync(client, conversation.ConversationId)).Start();

	Console.Write("Command> ");

	while (true)
	{
		string input = Console.ReadLine().Trim();

		if (input.ToLower() == "exit")
		{
			break;
		}
		else
		{
			if (input.Length > 0)
			{
				Activity userMessage = new Activity
				{
					From = new ChannelAccount(fromUser),
					Text = input,
					Type = ActivityTypes.Message
				};

				await client.Conversations.PostActivityAsync(conversation.ConversationId, userMessage);
			}
		}
	}
}

private static async Task ReadBotMessagesAsync(DirectLineClient client, string conversationId)
{
	string watermark = null;

	while (true)
	{
		var activitySet = await client.Conversations.GetActivitiesAsync(conversationId, watermark);
		watermark = activitySet?.Watermark;

		var activities = from x in activitySet.Activities
						 where x.From.Id == botId
						 select x;

		foreach (Activity activity in activities)
		{
			Console.WriteLine(activity.Text);

			Console.Write("Command> ");
		}

		await Task.Delay(TimeSpan.FromSeconds(1)).ConfigureAwait(false);
	}
}

呼叫啓動寄送訊息給chatbot的程式

static void Main(string[] args)
{
    StartBotConversation().Wait();
}

測試結果

接下來在App.Config裡面設定好Direct Line的secret以及bot id。

把console啓動起來。

開始輸入指令。

從上面的截圖可以看到，整個的運作模式和其他channel操作沒什麽兩樣，不過發現查飯店沒有任何東西被顯示出來，這個是爲什麽呢？