private void btnFind_Click(object sender, EventArgs e)
        {
            DataTable tk     = CauThuDAO.getDataForSearch();
            DataView  dv     = tk.DefaultView;
            string    filter = "";
            int       check  = 0;

            string tenCT = txtTen.Text;

            if (!string.IsNullOrEmpty(tenCT))
            {
                filter = filter + "TenCauThu like '%" + tenCT + "%' and";
                check  = 1;
            }

            if (cbxDoiBong.SelectedIndex != -1)
            {
                string madb = cbxDoiBong.SelectedValue.ToString();
                if (!string.IsNullOrEmpty(madb))
                {
                    filter = filter + " TenDoi like '%" + madb + "%' and";
                    check  = 1;
                }
            }

            int sbt;

            if (int.TryParse(txtSoBanThang.Text, out sbt) == true)
            {
                if (!string.IsNullOrEmpty(sbt.ToString()))
                {
                    filter = filter + " SoBanThang = '" + sbt + "' and";
                    check  = 1;
                }
            }
            else if (int.TryParse(txtSoBanThang.Text, out sbt) == false && txtSoBanThang.Text != "")
            {
                MessageBox.Show("Số bàn thắng không hợp lệ!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Information);
                reset();
                txtSoBanThang.Focus();
            }

            if (filter.Length > 0 && check == 1)
            {
                string final = filter.Remove(filter.Length - 3, 3);
                dv.RowFilter = final;
            }

            DataTable s = dv.ToTable();

            dgvTimKiemCauThu.DataSource = s;
            if (dgvTimKiemCauThu.Rows.Count < 2)
            {
                MessageBox.Show("Không có kết quả!");
                reset();
                return;
            }
        }
        private void UC_TimKiemCauThu_Load(object sender, EventArgs e)
        {
            DataTable dt = CauThuDAO.getDataForSearch();

            tb = dt;
            dgvTimKiemCauThu.DataSource = dt;

            DataTable doi = DoiBongDAO.getData();

            FillCbo(doi, cbxDoiBong, "TenDoi");
        }