private void button1_Click(object sender, EventArgs e)
{
if (cbbMatour.Text != null)
{
//string ma = cbbMatour.Text;
ma = a[vt];
cbbMaDoan.Items.Add("Tất cả");
for (int i = 0; i < bus1.getMaDoanDeThongKeChiPhi(ma, dateTimePicker1.Text, dateTimePicker2.Text).Rows.Count; i++)
{
cbbMaDoan.Items.Add(bus1.getMaDoanDeThongKeChiPhi(ma, dateTimePicker1.Text, dateTimePicker2.Text).Rows[i]["MADOAN"].ToString());
}
dataGridView1.DataSource = bus1.ThongKeChiPhiTatCaDoanTheoTour(ma, dateTimePicker1.Text, dateTimePicker2.Text);
}
else
{
MessageBox.Show("Ko thể thống kê");
}
}
