private void btn_Nueva_Click(object sender, EventArgs e)
        {
            FormNuevaPersona form = new FormNuevaPersona();

            form.ShowDialog();
            getPersonas();
        }
        private void btn_Editar_Click(object sender, EventArgs e)
        {
            int?id = Convert.ToInt16(data_Personas.Rows[data_Personas.CurrentRow.Index].Cells[0].Value.ToString());

            if (id != null)
            {
                FormNuevaPersona form = new FormNuevaPersona(id);
                form.ShowDialog();
                getPersonas();
            }
        }