private void buscarNssCitaButton_Click(object sender, RoutedEventArgs e)
        {
            NssWindow nssCitaWindow = new NssWindow(nssCitaTextBox);

            nssCitaWindow.Show();
        }
        private void buscarNssHistorialButton_Click(object sender, RoutedEventArgs e)
        {
            NssWindow nssHistorialWindow = new NssWindow(nssHistorialTextBox);

            nssHistorialWindow.Show();
        }