3. 3

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13. private void Application_Launching(object sender, LaunchingEventArgs e) { } private void Application_Activated(object sender, ActivatedEventArgs e) { } private void Application_Deactivated(object sender, DeactivatedEventArgs e) { } private void Application_Closing(object sender, ClosingEventArgs e) { }

14. private void Application_Closing(object sender, ClosingEventArgs e) { MainPage jotPadPage = (MainPage)RootFrame.Content; jotPadPage.Save(); }

15. public void Save() { saveText("jot.txt", jotTextBox.Text); }

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17. private void Application_Deactivated(object sender, DeactivatedEventArgs e) { MainPage jotPadPage = (MainPage)RootFrame.Content; jotPadPage.SaveState(); }

19. private void SaveStateText (string filename, string text) { IDictionary stateStore = PhoneApplicationService.Current.State; stateStore.Remove(filename); stateStore.Add(filename,text); }

20. private bool loadStateText(string filename, out string result) { IDictionary stateStore = PhoneApplicationService.Current.State; result = ""; if (!stateStore.ContainsKey(filename)) return false; result = (string)stateStore[filename]; return true; }

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24. public void Load() { string text; if (loadStateText("jot.txt", out text)) { jotTextBox.Text = text; return; } if (loadText("jot.txt", out text)) { jotTextBox.Text = text; } else { jotTextBox.Text = "Type your jottings here...."; }

25. private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e) { Load(); }

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