public MainPage()
{
this.InitializeComponent();
setDate();
this.ViewModel = App.ViewModel;
//initial();
GetNews();
}
public App()
{
ViewModel = DiaryItemViewModel.CreatInstance();
this.InitializeComponent();
this.Suspending += OnSuspending;
//load & read the data base
LoadDatabase();
}
public static DiaryItemViewModel CreatInstance()
{
//是否已在内存中存在，不存在就实例化，然后返回此实例
if (instance == null)
{
instance = new DiaryItemViewModel();
}
return(instance);
}
