private void btnConfirmar_Click(object sender, RoutedEventArgs e) { if (cmbProjeto.SelectedIndex < 0 || cmbSprint.SelectedIndex < 0 || txtData.Text.Length == 0 || txtUpload.Text.Length == 0) { Alerta alerta = new Alerta("Favor preencher todos os campos"); alerta.Show(); } else { TarefaDAO tDAO = new TarefaDAO(); List <DateTime> listaData = tDAO.recuperarListaDatasPorString(recuperarSprint()); bool upload = true; foreach (DateTime data in listaData) { if (Convert.ToDateTime(txtData.Text).Equals(data)) { upload = false; break; } } if (upload == true) { realizarUpload(txtUpload.Text); } else { AlertaUpload alerta = new AlertaUpload(this, txtUpload.Text, recuperarSprint(), txtData.Text); alerta.Show(); } } }