private void btnPTimKiem_Click(object sender, EventArgs e) { dgvPhong.Rows.Clear(); string sophong = cbPSoPhong.Text; string succhua = cbPSucChua.Text; string ssvht = txtPSSVHT.Text; string mady = cbPMaDay.Text; string trangthai = cbPTrangThai.Text; string tennv = cbPNhanVienQuanLy.Text; string loaiphong = cbPLoaiPhong.Text; string masv = cbPMaSV.Text; if (masv == "") { dtPhong = PBLL.TKPhongAll(sophong, succhua, ssvht, mady, trangthai, tennv, loaiphong); } else { dtPhong = PBLL.TKPhongSV(sophong, succhua, ssvht, mady, trangthai, tennv, loaiphong, masv); } if (dtPhong.Rows.Count > 0) { dgvPhong.Rows.Clear(); for (int i = 0; i < dtPhong.Rows.Count; i++) { string[] a = { dtPhong.Rows[i][0].ToString(), dtPhong.Rows[i][1].ToString(), dtPhong.Rows[i][2].ToString(), dtPhong.Rows[i][3].ToString(), dtPhong.Rows[i][4].ToString() }; dgvPhong.Rows.Add(a); } } else { MessageBox.Show("Không tìm thấy phòng phù hợp!", "Thông Báo", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } }