private void btnFinalise_Click(object sender, EventArgs e)
{
int startHours = int.Parse(txtStartTimeHours.Text);
int startMinutes = int.Parse(txtStartTimeMinutes.Text);
int endHours = int.Parse(txtEndTimeHours.Text);
int endMinutes = int.Parse(txtEndTimeMinutes.Text);
DateTime dateOfMaintenance = new DateTime(int.Parse(date.Substring(0, 4)), int.Parse(date.Substring(5, 2)), int.Parse(date.Substring(8, 2)));
TimeSpan ts = new TimeSpan(startHours, startMinutes, 0);
dateOfMaintenance = dateOfMaintenance.Date + ts;
Maintenance maintenance = new Maintenance(maintenanceID, orderID, productCode, cbxTechnicianID.Text, dateOfMaintenance, 0);
if (maintenance.CalculateDuration(startHours, startMinutes, endHours, endMinutes))
{
maintenance.FinaliseMaintenance();
frmManageMaintenances form = new frmManageMaintenances();
form.Show();
this.Hide();
}
}