protected async override void OnSleep()
{
string bdata = XStorage.SerializeXML <ObservableCollection <Book> >(App._booklist);
await XStorage.WriteStorageFile <ObservableCollection <Book> >(bdata, "books.xml");
string fdata = XStorage.SerializeXML <ObservableCollection <Friend> >(App._friendlist);
await XStorage.WriteStorageFile <ObservableCollection <Friend> >(fdata, "friends.xml");
// Handle when your app sleeps
}
protected async override void OnStart()
{
string bookdata = await XStorage.ReadStorageFile("books.xml");
if (XStorage.DeserializeXML <ObservableCollection <Book> >(bookdata) != null)
{
_booklist = await XStorage.DeserializeXML <ObservableCollection <Book> >(bookdata);
}
string frienddata = await XStorage.ReadStorageFile("friends.xml");
if (XStorage.DeserializeXML <ObservableCollection <Friend> >(frienddata) != null)
{
_friendlist = await XStorage.DeserializeXML <ObservableCollection <Friend> >(frienddata);
}
// Handle when your app starts
}