/// <summary>
/// create new select form and show it
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void StartOrderButton_Click(object sender, EventArgs e)
{
SelectForm selectForm = new SelectForm();
selectForm.previousForm = this;
selectForm.Show();
this.Hide();
}
/// <summary>
/// shows previous form
/// </summary>
private void showPreviousForm()
{
if (previousForm == null)
{
previousForm = new SelectForm();
}
previousForm.Show();
this.Hide();
}