public SearchHighlight()
        {
            var dependencyResolver = this.GetDependencyResolver();

            _dispatcherService      = dependencyResolver.Resolve <IDispatcherService>();
            _searchHighlightService = dependencyResolver.Resolve <ISearchHighlightService>();

            _searchHighlightService.Highlighting += OnSearchHighlightServiceHighlighting;
            _searchHighlightService.Highlighted  += OnSearchHighlightServiceHighlighted;
        }