Blazor EventCallback with Multiple Params – how to respond to event in parent host control

You are invoking it deconstructed:

await NewDayScrolledIntoView.InvokeAsync((p1, p2, p3));

When the event is received deconstruct it then:

<ShiftCardScroller NewDayScrolledIntoView="@((args)=> NewDayInView(args.Item1,args.Item2,args.Item3))" />