/// <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="navigationParameter"> /// The parameter value passed to /// <see cref="Frame.Navigate(Type, Object)" /> when this page was initially requested. /// </param> /// <param name="sender">The source of the event; typically <see cref="NavigationHelper" /></param> /// <param name="e"> /// Event data that provides an empty dictionary to be populated with /// serializable state. /// </param> private async void navigationHelper_SaveState(object sender, SaveStateEventArgs e) { var ds = this.DataContext as ItemViewModel; if (ds != null) { if (ds.SelectedItem != null) { e.PageState["SelectedItem"] = ds.SelectedItem.Id; var result = await JsonConvert.SerializeObjectAsync(ServiceManager.Sites); await StringIOExtensions.WriteToFile(result, "data.txt"); } } }
/// <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="sender">The source of the event; typically <see cref="NavigationHelper"/></param> /// <param name="e">Event data that provides an empty dictionary to be populated with /// serializable state.</param> private async void navigationHelper_SaveState(object sender, SaveStateEventArgs e) { //var ds = this.DataContext as PageViewModel; //if (ds != null) //{ // e.PageState["CurrentSite"] = ds.CurrentSite.Id; // e.PageState["SelectedIndex"] = PnlPivot.SelectedIndex; // var result = await JsonConvert.SerializeObjectAsync(ServiceManager.Sites); // await StringIOExtensions.WriteToFile(result, "data.txt"); //} }