public SearchHighlight() { var dependencyResolver = this.GetDependencyResolver(); _dispatcherService = dependencyResolver.Resolve <IDispatcherService>(); _searchHighlightService = dependencyResolver.Resolve <ISearchHighlightService>(); _searchHighlightService.Highlighting += OnSearchHighlightServiceHighlighting; _searchHighlightService.Highlighted += OnSearchHighlightServiceHighlighted; }