private void bt_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty((sender as SimpleButton).Text))
{
return;
}
else
{
DateTime dt = new DateTime(dateTimePicker1.Value.Year, dateTimePicker1.Value.Month, Convert.ToInt32((sender as SimpleButton).Text));
dateTimePicker1.Value = dt;
KhachHangDao kh = new KhachHangDao();
if (kh.LoadNgaySinh(dateTimePicker1.Value) != null && kh.LoadNgaySinh(dateTimePicker1.Value).Count > 0)
{
ThongBao tb = new ThongBao(dateTimePicker1.Value);
tb.ShowDialog();
}
}
}