public MainPage()
{
this.InitializeComponent();
// set the sidebar to GroupsSideBar
sideBar.Navigate(typeof(GroupsSideBar));
// set the Frame Navigator instances for navigating through the frames
ProfileNavigator.SetFrame(profileFrame);
LeftFrameNavigator.SetFrame(leftFrame);
RightFrameNavigator.SetFrame(rightFrame);
viewModel = new MainPageViewModel();
this.DataContext = viewModel;
this.NavigationCacheMode = NavigationCacheMode.Required;
}
