private void Button3_Click(object sender, RoutedEventArgs e)
        {
            var window = new IssueWindow();

            window.ResizeMode = ResizeMode.NoResize;
            window.Show();
        }
        private void Button2_Click(object sender, RoutedEventArgs e)
        {
            var window = new IssueWindow();

            window.ResizeMode      = ResizeMode.NoResize;
            window.BorderThickness = new Thickness(0);
            window.Show();
        }
        private void Button1_Click(object sender, RoutedEventArgs e)
        {
            var window = new IssueWindow();

            window.Show();
        }