NavigationLock not working

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

I am testing new component NavigationLock following this video https://www.youtube.com/watch?v=akffcwNpJiY and built my own Component around NavigationLock:

   public partial class ConfirmNavigation : BaseComponent<ConfirmNavigation>
    {
        [Parameter] public bool IsModified { get; set; }  

        public async Task OnConfirmNavigation(LocationChangingContext context) 
        {
            var confirm = await JSRuntime.InvokeAsync<bool>("window.confirm", "Es gibt nicht gespeicherte Daten. Wollen Sie die Seite wirklich verlassen?");
            Logger.LogInformation(LogEventIdEnum.Navigation.ToEventId(), "Navigation confirmed: {Confirm}, {TargetLocation}", confirm, context.TargetLocation);
            if (!confirm)
            {
                context.PreventNavigation();
            }
        }
    }

and

@inherits BaseComponent<ConfirmNavigation>

    @if (IsModified)
    {
        <NavigationLock OnBeforeInternalNavigation="@OnConfirmNavigation" ConfirmExternalNavigation />
    }

IsModified ist set the following way:

            DtoContext.OnFieldChanged += (sender, e) =>
            {
                var CanSave = DtoContext.Validate();
                IsModified = true;
                StateHasChanged();
            };

Now I enter only one char in input field which is recognised in OnFieldChanged Event. But when I press another link or page reload in browser, NavigationLock is not triggered. With some logging I could verify that IsModified is set to true.

Expected Behavior

NavogationLock Event OnConfirmNavigation ist called and user gets prompted.

Steps To Reproduce

See Bug description

Exceptions (if any)

No response

.NET Version

7.0.100

Anything else?

It looks like that it works in Debug, and sometimes I observed that it works when Component has been triggered at once, or by just enter a char and then hit <TAB>. Browser is actual version of edge

asp net core 7.0 Visual Studio Version 17.4.1

[digitalsigi]

Ok, the issue is within large project. I will try to extract the necessary parts. Please give me some time to do that.

L.G. Josef Bogad Von meinem iPhone gesendet

Am 28.11.2022 um 18:39 schrieb msftbot[bot] @.***>:

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