private void sessionButton_Click(object sender, RoutedEventArgs e)
 {
     DialogoIngresar loginDialog = new DialogoIngresar()
     {
         LogInHandler = Ingresar
     };
     loginDialog.Owner = this;
     loginDialog.ShowDialog();
 }
        private void sessionButton_Click(object sender, RoutedEventArgs e)
        {
            DialogoIngresar loginDialog = new DialogoIngresar()
            {
                LogInHandler = Ingresar
            };

            loginDialog.Owner = this;
            loginDialog.ShowDialog();
        }