private void btnThem_Click(object sender, EventArgs e)
{
// lưu, thêm active
hientext();
btnLưu.Enabled = true;
btnSua.Enabled = false;
btnXoa.Enabled = false;
btnRefresh.Enabled = false;
choice_save = 1;
choice_return = 1;
txtMaGV.Focus();
//
//if((int)GiaoVienDAO.getIDmin().Rows[0]["IDMin"]+1 <0)
// dong 0 cot IDMax;
// dem so dong cua IDGiaovien
// rows[0] -> row[n-2]
// neu ma so dang truoc kem so dang sau !=1 donvi thi tao cai ma so do +1
// vong lap for chay tu 0-> n-2;
if ((int)GiaoVienDAO.countID().Rows[0]["numID"] == (int)GiaoVienDAO.getIDmax().Rows[0]["IDMax"])
{
txtMaGV.Text = ((int)GiaoVienDAO.getIDmax().Rows[0]["IDMax"] + 1).ToString();
}
if ((int)GiaoVienDAO.countID().Rows[0]["numID"] != (int)GiaoVienDAO.getIDmax().Rows[0]["IDMax"])
{
for (int i = 1; i < (int)GiaoVienDAO.countID().Rows[0]["numID"]; i++)
{
if ((int)GiaoVienDAO.getID().Rows[0]["ID"] > 1)
{
txtMaGV.Text = ((int)GiaoVienDAO.getID().Rows[0]["ID"] - 1).ToString();
break;
}
if (((int)GiaoVienDAO.getID().Rows[i]["ID"] - (int)GiaoVienDAO.getID().Rows[i - 1]["ID"]) != 1)
{
txtMaGV.Text = ((int)GiaoVienDAO.getID().Rows[i - 1]["ID"] + 1).ToString();
break;
}
}
}
txtMaGV.Enabled = false;
// txtMaMonHoc.Enabled = false;
LoadComboBox();
}
