在v4 Bot Framework Bot中显示欢迎消息(C#+ .Net Core Web应用程序)

我用v3(C#)SDK创建了一个漫游器，欢迎消息过去工作得很顺利，没有任何汗水.而且在生产中它仍然对我有用.像这样在HandleSystemMessage中处理代码-

I had created a bot with v3 (C#) SDK and the welcome message used to work just fine without any sweat. And it still does for me in production. The code is handled in HandleSystemMessage like this -

.. v3代码为清晰起见删除了其他代码...

.. v3 Code additional code removed for clarity...

else if (message.Type == ActivityTypes.ConversationUpdate)
{
// Handle conversation state changes, like members being added and removed
// Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
// Not available in all channels

//Code to show Welcome Message
if (message.MembersAdded.Any(o => o.Id == message.Recipient.Id))
{
var reply = message.CreateReply();
reply.Attachments = new List<Attachment>();
// Create the attachment.
Attachment attachment = new Attachment()
{
ContentType = AdaptiveCard.ContentType,
Content = AdaptiveCardHelper.GetOptionsCard()
};
reply.Attachments.Add(attachment);
ConnectorClient connector = new ConnectorClient(new Uri(message.ServiceUrl));
await connector.Conversations.ReplyToActivityAsync(reply);
}
}

我使用的网络聊天版本是BotFramework-WebChat-0.11.4，我在其中进行了一些自定义以实现带评论的facebook点赞/点赞功能.

The Web Chat version that I use is BotFramework-WebChat-0.11.4, I have done certain customizations in it to implement facebook Like/Unlike feature with comment.

现在，我正在将漫游器迁移到v4 SDK(C#+ .Net Core Web App)，并且打算使用相同的旧版Webchat.但是我花了两天时间才能在同一网络聊天中显示欢迎消息，同时在模拟器(由于这两个ConversationUpdate)事件上也能很好地工作.

Now I am migrating the bots to v4 SDK (C# + .Net Core Web App), and I am intending to use the same old version of webchat. But I am struggling for two days to get a welcome message displayed in the same web chat while it works well on emulator (given to that two ConversationUpdate) events.

我尝试使用本文提供的解决方案发送消息以及事件，并尝试在Bot中使用不同的异步方法OnEventAsync，OnEventActivityAsync，OnMessageActivityAsync捕获消息.

I have tried sending a message as well as an event using the solution provided in this article and tried to catch that in Bot on different async methods OnEventAsync, OnEventActivityAsync, OnMessageActivityAsync.

https://blog.botframework.com/2018/07/12/how-to-properly-send-a-greeting-message-and-common-issues-from-customers/

V4代码如下:

 protected override async Task OnConversationUpdateActivityAsync(ITurnContext<IConversationUpdateActivity> turnContext, CancellationToken cancellationToken)
        {
            if (turnContext.Activity.MembersAdded != null)
            {
                if (turnContext.Activity.MembersAdded.Any(m => m.Id != turnContext.Activity.Recipient?.Id))
                {
                    //var welcomeCard = CreateAdaptiveCardAttachment();
                    //var response = CreateResponse(turnContext.Activity, welcomeCard);
                    //await turnContext.SendActivityAsync(response, cancellationToken);

                    await Utility.LogTraceAsync("Inside OnConversationUpdateActivityAsync");

                        var eventActivity = turnContext.Activity.AsConversationUpdateActivity();

                        ConnectorClient connector = new ConnectorClient(new Uri(eventActivity.ServiceUrl), Configuration.MicrosoftAppId, Configuration.MicrosoftAppPassword);

                        await Utility.LogTraceAsync("Service URL OnConversationUpdateActivityAsync" + eventActivity.ServiceUrl);

                        await Utility.LogTraceAsync("Recipient ID OnConversationUpdateActivityAsync" + turnContext.Activity.Recipient?.Id);

                        var welcomeCard = CreateAdaptiveCardAttachment();

                        var reply = ((Activity)eventActivity).CreateReply();
                        reply.Attachments.Add(welcomeCard);

                    //var response = CreateResponse(turnContext.Activity, welcomeCard);
                    await connector.Conversations.ReplyToActivityAsync(reply, cancellationToken);// turnContext.SendActivityAsync(response, cancellationToken);

                        await Utility.LogTraceAsync("OnConversationUpdateActivityAsync Response Returned.");

                    await Utility.LogTraceAsync("Exit OnConversationUpdateActivityAsync");
                }
            }
        }

        protected override async Task OnEventActivityAsync(ITurnContext<IEventActivity> turnContext, CancellationToken cancellationToken)
        {
            await Utility.LogTraceAsync("Inside OnEventActivityAsync");
            if (turnContext.Activity.Type == ActivityTypes.Event)
            {
                var eventActivity = turnContext.Activity.AsEventActivity();

                await Utility.LogTraceAsync("Event Activity from WebChat matched.");

                ConnectorClient connector = new ConnectorClient(new Uri(eventActivity.ServiceUrl), Configuration.MicrosoftAppId, Configuration.MicrosoftAppPassword);

                await Utility.LogTraceAsync("Service URL " + eventActivity.ServiceUrl);

                var welcomeCard = CreateAdaptiveCardAttachment();

                var reply = ((Activity)eventActivity).CreateReply();
                reply.Attachments.Add(welcomeCard);

                var members = await connector.Conversations.GetConversationMembersAsync(eventActivity.Conversation.Id.ToString());
                var membernames = "";
                foreach (var member in members) {
                    membernames += member.Name + ",";
                }

                await Utility.LogTraceAsync(membernames);

                await connector.Conversations.SendToConversationAsync(reply, cancellationToken);

                await connector.Conversations.ReplyToActivityAsync(reply, cancellationToken);// turnContext.SendActivityAsync(response, cancellationToken);

                await Utility.LogTraceAsync("Event Response Returned.");
            }

            await Utility.LogTraceAsync("Exit OnEventActivityAsync");
        }

但是它似乎根本不起作用.我正在拔头发，但对.Net Core App的操作一无所知.我很高兴知道有人是否解决了这个问题.

But it does not seem to work at all. I am pulling my hairs out and there is no clue on how to do for .Net Core App. I will be glad to know if someone has solved this problem.

更新-我在@tdurnford提供的客户端上使用了JS代码，在Bot Side使用了以下两种方法-

Update - I have used the JS code on client-side as provided by @tdurnford and at Bot Side had following two methods -

//Required to Show Welcome Message on Emulator
protected override async Task OnMembersAddedAsync(IList<ChannelAccount> membersAdded, ITurnContext<IConversationUpdateActivity> turnContext, CancellationToken cancellationToken)
        {
            foreach (var member in membersAdded ?? Array.Empty<ChannelAccount>())
            {
                // Greet anyone that was not the target (recipient) of this message.
                // To learn more about Adaptive Cards, see https://aka.ms/msbot-adaptivecards for more details.
                if (member.Id != turnContext.Activity.Recipient.Id)
                {
                    Activity reply = ((Activity)turnContext.Activity).CreateReply();
                    AdaptiveCard card = AdaptiveCardHelper.GetWelcomeCard();
                    Attachment attachment = new Attachment()
                    {
                        ContentType = AdaptiveCard.ContentType,
                        Content = card
                    };
                    reply.Attachments.Add(attachment);
                    await turnContext.SendActivityAsync(reply, cancellationToken);
                }
            }
        }

//Required to Show Welcome Message on Web Chat
        protected override async Task OnEventActivityAsync(ITurnContext<IEventActivity> turnContext, CancellationToken cancellationToken)
        {
            if (turnContext.Activity.Name == "webchat/join")
            {
                Activity reply = ((Activity)turnContext.Activity).CreateReply();
                AdaptiveCard card = AdaptiveCardHelper.GetWelcomeCard();
                Attachment attachment = new Attachment()
                {
                    ContentType = AdaptiveCard.ContentType,
                    Content = card
                };
                reply.Attachments.Add(attachment);
                await turnContext.SendActivityAsync(reply, cancellationToken);
            }
        }

使用这两种方法，聊天窗口中都会显示两条欢迎消息-

With both methods two welcome messages are shown in the chat window -

带有两个欢迎消息的启动窗口

然后，我在C#中注释了OnEventActivityAsync方法，然后再次部署.现在，如窗口所示，它仅显示从OnMemberFyresAsync返回的一条欢迎消息.

Then I've commented the OnEventActivityAsync method in C# and deployed again. Now it shows only one welcome message returned from OnMembersAddedAsync as shown in the window.

只有一个欢迎消息的启动窗口

如果我在网上聊天代码中注释了以下代码行，即不发送活动后信息-

If I comment the following code lines in the webchat code i.e. don't send the post-activity -

botConnection.postActivity({
    from: {
        id: 'myUserId',
        name: 'myUserName'
    },
    type: 'event',
    name: 'webchat/join',
    value: {
        locale: 'en-US'
    }
}).subscribe(
    id => console.log("Posted welcome event, assigned ID ", id),
    error => console.log("Error posting activity", error)
);

在这种情况下，不会显示欢迎消息. @tdurnford，请检查您是否能够复制此行为.

In this case, no welcome message is displayed. @tdurnford, please check if you are able to replicate this behavior.

尽管这样还有另一个问题，当用户在机器人中键入问题时，会再次显示欢迎消息. 启动窗口中有两个欢迎消息，一个正在加载，另一个在第一个问题后出现

Although there is another problem here in this way that when a user types a question in the bot, then a welcome message is displayed again. Bot window with two welcome messages one on load and another after the first question