private void buttonAddArea_Click(object sender, EventArgs e)
        {
            FormInsertarArea nueva = new FormInsertarArea(this);

            nueva.Show();
        }
        private void cambiarNombreToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FormInsertarArea nueva = new FormInsertarArea(this, dataGridViewAreas.SelectedRows[0].Cells[0].Value.ToString());

            nueva.Show();
        }