private void district_no_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13)
{
try
{
District d = new District();
Thana t = new Thana();
districtbox.Text = d.getDistrictName(Convert.ToInt32(district_no.Text));
thanabox.DataSource = t.getThanaList(d.getDistrictNo(districtbox.Text.ToString()));
thana_no.Select();
}
catch (Exception ex) {MessageBox.Show(ex.ToString()); }
}
}
private void districtbox_SelectedIndexChanged(object sender, EventArgs e)
{
thanabox.Text = null;
Thana t = new Thana();
District d = new District();
try
{
district_no.Text = d.getDistrictNo(districtbox.Text.ToString()).ToString();
thanabox.DataSource = t.getThanaList(Convert.ToInt32(district_no.Text.ToString()));
thanabox.SelectedIndex = -1;
thanabox.Select();
}
catch (Exception ex) { MessageBox.Show(ex.ToString()); }
}