// Fill source language combo box private void UpdateSourceCB() { sourceLanguageCB.Items.Clear(); sourceLanguageCB.Items.Add(new ComboBoxItem() { Content = "Select Source Language", Visibility = Visibility.Collapsed }); sourceLanguageCB.SelectedIndex = 0; foreach (string lang in OCRUtil.AvailableOCRLangs().Values) { sourceLanguageCB.Items.Add(lang); } targetLanguageCB.SelectedIndex = 0; }