private void DeleteSoundAction()
{
var sound = SelectedSounds.Count == 1 ? AppResourcesHelper.Get("Editor_SoundSingular") : AppResourcesHelper.Get("Editor_SoundPlural");
var messageContent = String.Format(AppResourcesHelper.Get("Editor_MessageBoxDeleteText"), SelectedSounds.Count, sound);
var messageHeader = String.Format(AppResourcesHelper.Get("Editor_MessageBoxDeleteHeader"), sound);
ServiceLocator.NotifictionService.ShowMessageBox(messageHeader,
messageContent, DeleteSoundMessageBoxResult, MessageBoxOptions.OkCancel);
ActionsCommandBarMode = MultiModeEditorCommandBarMode.Normal;
}