// When page is navigated to set data context to selected item in list protected override void OnNavigatedTo(NavigationEventArgs e) { string projectId; if (NavigationContext.QueryString.TryGetValue("project", out projectId)) { // Find the project Guid pId = Guid.Parse(projectId); project = Service.Instance.Projects.FirstOrDefault(p => p.Id == pId); if (project == null) { NavigationService.GoBack(); return; } project.RefreshWorkItems(); } else NavigationService.GoBack(); }