private void btnSearch_Click(object sender, RoutedEventArgs e)
        {
            frmChooseLangs lang = new frmChooseLangs(TranslationManage.languages);
            string langIDs = lang.LanguageIDs;
            if (string.IsNullOrEmpty(txtSearch.Text))
            {
                MessageBox.Show("Please input strings what you need to search!", "Warning", MessageBoxButton.OK, MessageBoxImage.Warning);
                txtSearch.Focus();
            }
            else if (string.IsNullOrEmpty(langIDs))
            {
                MessageBox.Show("Please select languages!", "Warning", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }
            else
            {
                bool? isFront = cbFront.IsChecked;
                bool? isLast = cbLast.IsChecked;
                string keyString = txtSearch.Text;
                BackgroundWorker worker = new BackgroundWorker();
                worker.DoWork += (o, ea) =>
                {
                    try
                    {
                        DataTable dt = transManage.FuzzyQuery(keyString, langIDs, isFront, isLast);
                        Dispatcher.Invoke(new Action(() => dgFuzzyList.ItemsSource = dt.DefaultView));
                        SetStatusLabelValue(tsslblException, "");
                    }
                    catch (Exception ex)
                    {
                        ea.Result = ex;
                    }
                };

                worker.RunWorkerCompleted += (o, ea) =>
                {
                    pBar.Visibility = Visibility.Hidden;
                    if (ea.Result != null)
                    {
                        SetStatusLabelValue(tsslblException, "Warning : " + ea.Result);
                    }
                };

                SetStatusLabelValue(tsslblException, "");
                pBar.Visibility = Visibility.Visible;
                worker.RunWorkerAsync();
            }
        }
 private void btnChooseLangs_Click(object sender, RoutedEventArgs e)
 {
     frmChooseLangs frmLangs = new frmChooseLangs(TranslationManage.languages);
     frmLangs.ShowDialog();
 }