private void btnUpdate_Click(object sender, EventArgs e)
{
Schedule sche = scheduleBUS.getSchedule(idSche);
sche.Time = TimeSpan.Parse(txtTime.Text.ToString());
sche.Date = dtpDate.Value;
sche.EconomyPrice = decimal.Parse(txtPrice.Text.ToString());
scheduleBUS.updateSchedule(sche);
this.Close();
}