public FrmPesCidade(frmPesquisa formPai)
 {
     InitializeComponent();
     formPaiInstancia = formPai;
 }
        private void PesquisaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmPesquisa frmPesquisa = new frmPesquisa();

            frmPesquisa.ShowDialog();
        }