private void btnDangNhap_Click(object sender, EventArgs e)
{
//aa
DBConnect cn = new DBConnect();
string txtID = txtId.Text;
string txtPass = txtPASS.Text;
EmployeeManagement employee = new EmployeeManagement();
cn.conn.Open();
if (employee.CheckLogin(txtID, txtPass) == 3)
{
frmNhanVien NV = new frmNhanVien();
NV.Show();
}
else if (employee.CheckLogin(txtID, txtPass) == 0)
{
MessageBox.Show("Dữ liệu không hợp lệ");
}
else
{
frmQuanLi QL = new frmQuanLi();
QL.Show();
}
cn.conn.Close();
}