private void btnTongLuong_Click(object sender, EventArgs e) { Luong temp = new Luong(txtMaNV.Text, txtLuong.Text, txtLuongThuong.Text, txtGhichu.Text, txtSNTC.Text, txtTongLuong.Text); ConnectDatabase.TongLuong_NV(temp); dgvLuong_CaNhan.DataSource = ConnectDatabase.GetAllLuong_NV(); }