private void backupToolStripMenuItem_Click(object sender, EventArgs e) { Boolean existe = false; foreach (Form openForm in Application.OpenForms) { if (openForm is FrmBackup) { openForm.BringToFront(); existe = true; } } if (!existe) { FrmBackup novoForm; novoForm = new FrmBackup(); novoForm.MdiParent = this; novoForm.Show(); } }
private void BackupToolStripMenuItem_Click(object sender, EventArgs e) { try { if (Application.OpenForms["FrmBackup"] == null) { frmBackup = new FrmBackup { MdiParent = this }; frmBackup.Show(); } else { Application.OpenForms["FrmBackup"].BringToFront(); } } catch (Exception ex) { MessageBox.Show(ex.Message); } }