Clock.Web/Pages/Index.razor

@page "/"
@using global::Clock.ViewModels
@using System.ComponentModel
@inject IClockViewModel ClockViewModel

<p>Date: @ClockViewModel.Date</p>
<p>Time: @ClockViewModel.Time</p>

@code {                             
    protected override void OnInitialized()
    {
        ((INotifyPropertyChanged)ClockViewModel).PropertyChanged += (sender, args) => InvokeAsync(StateHasChanged);
        base.OnInitialized();
    }
}