/// <summary>
/// this method opens files to get data from file
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void _clickLoadSavedOrderButton(object sender, EventArgs e)
{
ProductInfoForm product = new ProductInfoForm();
product.Show();
product.previousForm = new SelectForm();
this.Hide();
product.ClickOpenToolStripMenuItem(sender, e);
}