void BtnNaturezaClick(object sender, EventArgs e)
{
fCadNaturezas frmCad = new fCadNaturezas(true);
frmCad.ShowDialog();
if (frmCad.result)
{
CarregaNaturezas();
cbxCodNaturezas.Text = frmCad.codigo;
int n = cbxCodNaturezas.SelectedIndex;
cbxNaturezas.Text = (n >= 0) ? cbxNaturezas.Items[n].ToString() : "";
}
cbxNaturezas.Focus();
}
void MniNaturezasClick(object sender, EventArgs e)
{
fCadNaturezas frm = new fCadNaturezas(false);
frm.ShowDialog();
}