private void btnTimKiem_Click_1(object sender, EventArgs e)
{
dataGridView1.DataSource = dt.TimKiemNangCao(cbDiemDi.SelectedValue.ToString(),
cbDiemDen.SelectedValue.ToString(),
cbLoaiVe.SelectedValue.ToString(),
Convert.ToDateTime(dtpNgayDi.Value));
}
private void frmThemChuyenBay_Load(object sender, EventArgs e)
{
dataGridView1.DataSource = dt.TimKiemNangCao("SB02", "SB04", "BamBoo", Convert.ToDateTime("2020-07-07"));
}