private void _btn_modify_Click(object sender, RoutedEventArgs e)
{
string company_id = (sender as System.Windows.Controls.Button).Tag.ToString();
NewOrModifyDevice company = new NewOrModifyDevice(dbOperation, company_id, this);
company.ShowDialog();
}
private void _new_Click(object sender, RoutedEventArgs e)
{
NewOrModifyDevice company = new NewOrModifyDevice(dbOperation, this);
company.ShowDialog();
}