using System;
using System.Diagnostics;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Threading;

namespace asyncTest
{
    /// <summary>
    /// Interaction logic for BetterWindow.xaml
    /// </summary>
    public partial class BetterWindow : Window
    {
        public BetterWindow()
        {
            InitializeComponent();

            var timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(10);
            timer.Tick += Timer_Tick;
            timer.Start();
        }

        private async void Timer_Tick(object sender, EventArgs e)
        {
            if (await ShouldExit())
            {
                Close();
            }
        }

        private async Task<bool> ShouldExit()
        {
            Debug.WriteLine("Checking the DB");
            //Simulate a long DB operation
            await Task.Delay(TimeSpan.FromSeconds(5));
            return chkAllowClose.IsChecked.GetValueOrDefault(false);
        }
    }
}