private void tb_SDT_TextChanged(object sender, EventArgs e)
{
lb_SDT.Text = tb_SDT.Text;
if (busKH.KiemTraSDT(lb_SDT.Text))
{
DataTable dt = busKH.LayThongTinKhachHangSDT(lb_SDT.Text);
lbMKH.Text = dt.Rows[0].ItemArray[0].ToString();
lbTenKH.Text = dt.Rows[0].ItemArray[1].ToString();
lb_SDT.Text = dt.Rows[0].ItemArray[2].ToString();
}
else
{
lbMKH.Text = "___";
lbTenKH.Text = "___";
lb_SDT.Text = "___";
}
}