private void OnLanguageSelected(object sender, EventArgs e)
{
if (listBox_translations.SelectedIndex == -1)
return;
TranslationData translationData = (TranslationData) listBox_translations.SelectedItem;
label_lang_val.Text = translationData.Language != string.Empty
? translationData.Language : Translation.GetTranslation("UNKNOWN");
label_version_val.Text = translationData.Version != string.Empty
? translationData.Version : Translation.GetTranslation("UNKNOWN");
label_author_val.Text = translationData.Author != string.Empty
? translationData.Author : Translation.GetTranslation("UNKNOWN");
}