private void thanabox_SelectedIndexChanged(object sender, EventArgs e)
{
Union u = new Union();
Thana t = new Thana();
District d = new District ();
try
{
thana_no.Text = t.getThanaNo(thanabox.Text.ToString(), Convert.ToInt32(district_no.Text.ToString())).ToString();
String thanaid = "D" + district_no.Text + "T" + thana_no.Text + "";
unionbox.DataSource = u.getUnionList(thanaid);
unionbox.SelectedIndex = -1;
unionbox.Select();
}
catch (Exception ex) { }
}
