private void re()
 {
     AddtoChina u = new AddtoChina();
     u.ds = ds;
     con.Close();
     u.con = con;
     u.cmd = cmd;
     u.ShowDialog();
 }
 private void добавитьЮрЛицоToolStripMenuItem_Click(object sender, EventArgs e)
 {
     AddtoChina u = new AddtoChina();
     u.Show();
 }