protected async override void LoadState(Object navigationParameter, Dictionary <String, Object> pageState)
{
if (pageState != null)
{
if (pageState.ContainsKey("selectedArticleName") &&
pageState.ContainsKey("selectedArticleImage") &&
pageState.ContainsKey("selectedArticleObjectId"))
{
var selectedArticleName = pageState["selectedArticleName"].ToString();
var selectedGroupImage = pageState["selectedArticleImage"].ToString();
var selectedArticleObjectId = pageState["selectedArticleObjectId"].ToString();
ArticlesInGroup article = new ArticlesInGroup();
article.Name = selectedArticleName;
article.Image = selectedGroupImage;
article.ObjectId = selectedArticleObjectId;
((App)App.Current).SelectedArticle = new List <object>()
{
article
};
var context = this.DataContext as ArticleViewModel;
await context.GetArticle();
}
}
DataTransferManager.GetForCurrentView().DataRequested += OnDataRequested;
}
public async Task GetArticle()
{
ArticlesInGroup article = ((App)App.Current).SelectedArticle[0] as ArticlesInGroup;
string objectId = article.ObjectId;
Article foundArticle = await this.dataService.GetArticleByObjectId(objectId);
this.Article = foundArticle;
this.RaisePropertyChanged("Article");
}
/// <summary>
/// Preserves state associated with this page in case the application is suspended or the
/// page is discarded from the navigation cache. Values must conform to the serialization
/// requirements of <see cref="SuspensionManager.SessionState"/>.
/// </summary>
/// <param name="pageState">An empty dictionary to be populated with serializable state.</param>
protected override void SaveState(Dictionary <String, Object> pageState)
{
if (pageState != null)
{
if (((App)App.Current).SelectedArticle != null)
{
ArticlesInGroup article = ((App)App.Current).SelectedArticle[0] as ArticlesInGroup;
pageState["selectedArticleName"] = article.Name.ToString();
pageState["selectedArticleImage"] = article.Image.ToString();
pageState["selectedArticleObjectId"] = article.ObjectId.ToString();
}
}
DataTransferManager.GetForCurrentView().DataRequested -= OnDataRequested;
}