public MainWindow()
{
InitializeComponent();
Loaded += fillDataGrid;
Payment.TextChanged += Payment_TextChanged;
wallet = new WalletWindow();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
WalletWindow newWallet = new WalletWindow(wallet);
newWallet.ShowDialog();
}
public WalletWindow(WalletWindow wallet)
{
this.Content = wallet.Content;
}