private void btnUpdateAvailability_Click(object sender, EventArgs e)
{
int ID = int.Parse(txtIDUpdate1.Text);
int availability = cmbUpdate1.Text == "Available" ? 1 : 0;
SecurityLevel sl = new SecurityLevel();
sl.UpdateSecurityLevelAvailability(ID, availability);
bs.DataSource = dataAccess.GetAllSecurityLevels();
bs.ResetBindings(true);
}