private void creditosPendientesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmCreditosPendientes frm = new frmCreditosPendientes();

            frm.MdiParent = this;
            frm.Show();
            frm.dataListado.ClearSelection();
        }
 public frmCreditosPendientes()
 {
     InitializeComponent();
     frmCreditosPendientes.f1 = this;
 }