private void buttonLogin_Click(object sender, EventArgs e)
        {
            MyDB           db      = new MyDB();
            SqlDataAdapter adapter = new SqlDataAdapter();

            DataTable table = new DataTable();
            string    query = "SELECT * FROM Login WHERE username=@User AND password=@Pass";

            if (radioButtonParking.Checked == true)
            {
                query = "SELECT * FROM Tho WHERE Username=@User AND Password=@Pass AND LoaiNguoiDung = 'Parking'";
            }
            else if (radioButtonWorker.Checked)
            {
                query = "SELECT * FROM Tho WHERE Username=@User AND Password=@Pass AND (LoaiNguoiDung = 'Worker')";
            }
            SqlCommand cmd = new SqlCommand(query, db.getConnection);

            cmd.Parameters.Add("@User", SqlDbType.VarChar).Value = textBoxUser.Text;
            cmd.Parameters.Add("@Pass", SqlDbType.VarChar).Value = textBoxPassword.Text;

            adapter.SelectCommand = cmd;
            adapter.Fill(table);


            if ((table.Rows.Count > 0))
            {
                Checkin_out check_time = new Checkin_out();
                Globals.GlobalUserID = Convert.ToInt32(table.Rows[0][0].ToString());
                Globals.time_in      = DateTime.Now;
                this.Close();
                if (radioButtonHumanResourse.Checked)
                {
                    dashboardForm dashboard = new dashboardForm();
                    dashboard.ShowDialog(this);
                }
                else if (radioButtonParking.Checked)
                {
                    if (check_time.insert_Checkin(Globals.GlobalUserID, Globals.time_in))
                    {
                        MessageBox.Show("Check in Sucessfully!", "Check in", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        manageVehiclesForm manageVehicles = new manageVehiclesForm();
                        manageVehicles.ShowDialog(this);
                    }
                }
                else
                {
                    if (check_time.insert_Checkin(Globals.GlobalUserID, Globals.time_in))
                    {
                        MessageBox.Show("Check in Sucessfully!", "Check in", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        wokerDashBoardForm woker = new wokerDashBoardForm();
                        woker.ShowDialog(this);
                    }
                }
            }
            else
            {
                MessageBox.Show("Invalid Username or Password", "Login error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        private void buttonExit_Click(object sender, EventArgs e)
        {
            Checkin_out check_time = new Checkin_out();

            if (MessageBox.Show("Do you want to Check-out and Exit", "Check out and Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                if (check_time.update_time_out(Globals.GlobalUserID, Globals.time_in, DateTime.Now))
                {
                    this.Close();
                }
            }
        }