private void toolStripButton1_Click(object sender, EventArgs e)
        {
            frmActividadFactoriales frm1 = new frmActividadFactoriales();

            frm1.MdiParent = this;
            frm1.ShowDialog();
        }
        private void ShowNewForm(object sender, EventArgs e)
        {
            frmActividadFactoriales frm1 = new frmActividadFactoriales();

            frm1.MdiParent = this;
            frm1.Show();
        }