private void créditoAProveedoresToolStripMenuItem_Click(object sender, EventArgs e) { if (isCreditoProveShow) { frmCreditoProve.Focus(); } else { if (VerificarAdmin(this.usuario)) { autorizacion_form form = new autorizacion_form(); if (form.ShowDialog() == DialogResult.OK) { if (form.ValorRetorno) { frmCreditoProve.MdiParent = this; frmCreditoProve.Show(); isCreditoProveShow = true; } } } else { frmCreditoProve.MdiParent = this; frmCreditoProve.Show(); isCreditoProveShow = true; } } }