public MenuPivot()
{
InitializeComponent();
httpHelper = HttpHelper.GetInstance();
int hr = USTCCardProtocol.HRESULT_OK;
hr = InitProfilePage();
hr = InitQueryPage();
}
// Constructor
public MainPage()
{
InitializeComponent();
int hr = USTCCardProtocol.HRESULT_OK;
httpHelper = HttpHelper.GetInstance();
if (!Microsoft.Phone.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable())
MessageBox.Show("没用可用的网络连接，请打开网络！");
}
public MainViewModel()
{
MainViewModel.Items = new ObservableCollection<ItemViewModel>();
httpHelper = HttpHelper.GetInstance();
}