可用于自身或导航至 Frame 内部的空白页。
Inheritance: Windows.UI.Xaml.Controls.Page
        public BigDataPage()
        {
            this.InitializeComponent();
            viewmodel         = new ZSCY_Win10.ViewModels.BigDataViewModel();
            this.DataContext  = viewmodel;
            bigdatacaipage    = this;
            this.SizeChanged += BigDataPage_SizeChanged;

            //手机物理返回键订阅事件
            if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
            {
                Windows.Phone.UI.Input.HardwareButtons.BackPressed += OnBackPressed;
            }
            else
            {
                Windows.UI.Core.SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = Windows.UI.Core.AppViewBackButtonVisibility.Visible;
                Windows.UI.Core.SystemNavigationManager.GetForCurrentView().BackRequested += PC_BackRequested;
            }
        }
        public BigDataPage()
        {
            this.InitializeComponent();
            comboBox0.ItemsSource = colleage;
            comboBox1.ItemsSource = attention;
            comboBox2.ItemsSource = colleage;
            comboBox3.ItemsSource = colleage;

            viewmodel = new ZSCY_Win10.ViewModels.BigDataViewModel();
            this.DataContext = viewmodel;
            bigdatacaipage = this;
            this.SizeChanged += BigDataPage_SizeChanged;

            //手机物理返回键订阅事件
            if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
            {
                Windows.Phone.UI.Input.HardwareButtons.BackPressed += OnBackPressed;
            }
            else
            {
                Windows.UI.Core.SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = Windows.UI.Core.AppViewBackButtonVisibility.Visible;
                Windows.UI.Core.SystemNavigationManager.GetForCurrentView().BackRequested += PC_BackRequested;
            }
        }