private void PagamentoToolStripMenuItem3_Click(object sender, EventArgs e) { if (Application.OpenForms.OfType <FrmRegistroPagamento>().Count() == 0) { FrmRegistroPagamento tela = new FrmRegistroPagamento(); tela.Show(); } }
private void pagamentoToolStripMenuItem3_Click(object sender, EventArgs e) { FrmRegistroPagamento tela = new FrmRegistroPagamento(); tela.Show(); }