private void _1_1_Click(object sender, RoutedEventArgs e)
    {
        if (radar.IsChecked == true)
        {
            if (gridarray[0,0] == 1)
            {
                Random rnd = new Random();
                int r = rnd.Next(0,3);
                _1_1.Content = images[r];
                streak.Content = streakn++;
            }
            if (gridarray[0,0] == 2 || gridarray[0,1] == 2)
            {
                Random rnd = new Random();
                int r = rnd.Next(3, 5);
                _1_1.Content = images[r];
                streak.Content = streakn++;
            }
            if (gridarray[0,0] == 3 || gridarray[0,1] == 3 || gridarray[0,2] == 3)
            {
                Random rnd = new Random();
                int r = rnd.Next(5, 7);
                _1_1.Content = images[r];
                streak.Content = streakn++;
            }
        }

private void defineImages()
    {
        images[0].Source = new BitmapImage(new Uri("Resources/small1.png", UriKind.Relative));
        images[1].Source = new BitmapImage(new Uri("Resources/small2.jpg", UriKind.Relative));
        images[2].Source = new BitmapImage(new Uri("Resources/small3.png", UriKind.Relative));
        images[3].Source = new BitmapImage(new Uri("Resources/medium-1.jpg", UriKind.Relative));
        images[4].Source = new BitmapImage(new Uri("Resources/medium2.jpg", UriKind.Relative));
        images[5].Source = new BitmapImage(new Uri("Resources/large1.png", UriKind.Relative));
        images[6].Source = new BitmapImage(new Uri("Resources/large2.jpg", UriKind.Relative));

    }