Botframework Dialog migration v3 to v4

Botframework Dialog migration v3 to v4

By : Tess Rodrigues
Date : November 22 2020, 04:01 AM
Hope that helps A good place to start when converting a V3 dialog to V4 involves changing:
IDialog -> Dialog or ComponentDialog (depending)
code :

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Botframework dynamically call dialog from reusable dialog

Botframework dynamically call dialog from reusable dialog

By : ramzee
Date : March 29 2020, 07:55 AM
hop of those help? Instead of delegating the responsibility of calling the next dialog to the LoginDialog, wouldn't be better to make the LoginDialog to return if it's valid or not, and have the caller decide who to call next?
Regarding your issue, first, check if the Type.GetType is returning what you expected and then yes, try casting to see if the issue is there or if there is something else going on.
Loading Dialog from JSON - BotFramework V4

Loading Dialog from JSON - BotFramework V4

By : Hattieuden Hoa
Date : March 29 2020, 07:55 AM
it fixes the issue As you've seen, FormFlow was included in the V3 SDK in two forms: with and without the JSON schema. There actually is a way to use FormFlow in V4, but only without the JSON schema.
The Bot Framework can do many things, as you can see in the documentation. You might have look to see if there's anything that suits your needs.
Botframework v4: Call parent dialog from child dialog without stackoverflow exception

Botframework v4: Call parent dialog from child dialog without stackoverflow exception

By : user2602157
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Assuming you're adding the Dialogs in the constructor of your dialog, then you're producing an infinite loop ultimately resulting in the stack overflow you're describing.
code :
MainDialog --> DialogA --> DialogAchild --> MainDialog --> infinite loop
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Schema;
using Bot.Dialogs.Authentication;
using Bot.Dialogs.Main;
using Bot.Dialogs.Onboarding;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace Bot.Dialogs.Shared
    public class AuthenticatedDialog : EnterpriseDialog
        private BotStateAccessors _accessors;
        private BotServices _botServices;

        public AuthenticatedDialog(BotServices botServices, string dialogId, BotStateAccessors accessors) : base(botServices, dialogId)
            _accessors = accessors;
            _botServices = botServices;

            AddDialog(new AuthenticationDialog("", accessors));

        protected async Task<DialogTurnResult> AskForOnboardingAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken, object stepResult = null)
            return await stepContext.BeginDialogAsync(nameof(OnboardingDialog), stepResult, cancellationToken);

        protected void AddOnboardingDialog()
            AddDialog(new OnboardingDialog(_botServices,_accessors));

public class DialogA : AuthenticatedDialog

        public DialogA(BotServices botServices, BotStateAccessors accessors) : base(botServices, nameof(DialogA), accessors)

            var preferencesDispatchSteps = new WaterfallStep[]

            AddDialog(new FooDialog);
Can't call sub dialog from main dialog in BotFramework 4

Can't call sub dialog from main dialog in BotFramework 4

By : jonesydesign
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You need to add MyDialog to dialog list in MainDialog. In you MainDialog you need to inject MyDialog instance and add it to dialog list using AddDialog(mydialoginstance);
Similar to how you have added bookingDialog
How to detect end of dialog in Botframework v4?

How to detect end of dialog in Botframework v4?

By : user3630767
Date : March 29 2020, 07:55 AM
wish help you to fix your issue This can't exactly be done, since endDialog doesn't bubble up to anything accessible from ActivityHandler (as far as I know).
But for a workaround, you're so close! Change it to something like this:
code :
this.onDialog(async (context, next) => {
    const currentDialog = await this.dialogState.get(context);
    if (currentDialog === undefined) {
        console.log('No dialogs started');
    } else if (currentDialog.dialogStack && currentDialog.dialogStack.length > 0) {
        console.log('Dialog is running');
    } else {
        console.log('Dialog is not running');

    // By calling next() you ensure that the next BotHandler is run.
    await next();
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