private string GetDesignModeValue() { var provider = DesignTime.GetTranslationProvider(this._parent) ?? TranslationManager.TranslationProvider; string language = DesignTime.GetLanguage(this._parent); var culture = language == null ? TranslationManager.CurrentLanguage : new CultureInfo(language); if (provider == null || culture == null) { return(string.Format("!!{0}.{1}!!", this._group, this._key)); } return(provider.Translate(this._group, this._key, culture)); }