private void btnOk_Click(object sender, EventArgs e)
{
ListBox listLocalities = (ListBox)Controls.Find("listLocalities", true)[0];
Label labelPrice = (Label)Controls.Find("labelPrice", true)[0];
DateTimePicker dateTimePicker = (DateTimePicker)Controls.Find("dateTimePicker", true)[0];
Locality locality = (Locality)listLocalities.SelectedItem;
labelPrice.Text = locality.GetPriceByDate(dateTimePicker.Value).ToString();
}
