public static SingletonForSqlConnection getInstance()
{
if (instance == null)
{
instance = new SingletonForSqlConnection();
}
return(instance);
}
public MainWindow()
{
InitializeComponent();
if (flag)
{
SingletonForSqlConnection.getInstance();
flag = false;
}
DataContext = new UserViewModel(this);
Password.getInstance();
}
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
SingletonForSqlConnection.Close();
}