private void str_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
// go back
var mainWindow = new MainWindow();
mainWindow.Show();
this.Close();
}
/// <summary>
/// Handle a button click from the wrap panel.
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private void MainWindowButtonHovered(object sender, RoutedEventArgs e)
{
// instantiate a new MainWindow
MainWindow main = new MainWindow();
// set the current window to MainWindow
App.Current.MainWindow = main;
// close this windows
this.Close();
// open MainWindow
main.Show();
e.Handled = true;
}