using?System;
using?System.Collections.Generic;
using?System.IO;
using?System.Linq;
using?Windows.ApplicationModel;
using?Windows.ApplicationModel.Activation;
using?Windows.Foundation;
using?Windows.Foundation.Collections;
using?Windows.UI.Xaml;
using?Windows.UI.Xaml.Controls;
using?Windows.UI.Xaml.Controls.Primitives;
using?Windows.UI.Xaml.Data;
using?Windows.UI.Xaml.Input;
using?Windows.UI.Xaml.Media;
using?Windows.UI.Xaml.Navigation;

//?The?Blank?Application?template?is?documented?at?http://go.microsoft.com/fwlink/?linkId=234227

namespace?FashionHouse_000_UIDesgin
{
????///?

????///?Provides?application-specific?behavior?to?supplement?the?default?Application?class.
????///?

????sealed?partial?class?App?:?Application
????{
????????///?

????????///?Initializes?the?singleton?application?object.??This?is?the?first?line?of?authored?code
????????///?executed?and?as?such?is?the?logical?equivalent?of?main（）?or?WinMain（）.
????????///?

????????public?App（）
????????{
????????????this.InitializeComponent（）;
????????????this.Suspending?+=?OnSuspending;
????????}

????????///?

????????///?Invoked?when?the?application?is?launched?normally?by?the?end?user.??Other?entry?points
????????///?will?be?used?when?the?application?is?launched?to?open?a?specific?file?to?display
????????///?search?results?and?so?forth.
????????///?

????????///?Details?about?the?launch?request?and?process.
????????protected?override?void?OnLaunched（LaunchActivatedEventArgs?args）
????????{
????????????//?Do?not?repeat?app?initialization?when?already?running?just?ensure?that
????????????//?the?window?is?active
????????????if?（args.PreviousExecutionState?==?ApplicationExecutionState.Running）
????????????{
????????????????Window.Current.Activate（）;
????????????????return;
????????????}

????????????if?（args.PreviousExecutionState?==?ApplicationExecutionState.Terminated）
????????????{
????????????????//TODO:?Load?state?from?previously?suspended?application
????????????}

????????????//?Create?a?frame?to?act?navigation?context?and?navigate?to?the?first?page
????????????var?rootframe?=?new?frame（）;
????????????if?（!rootframe.Navigate（typeof（MainPage）））
????????????{
????????????????throw?new?Exception（“Failed?to?create?initial?page“）;
????????????}

????????????//?Place?the?frame?in?the?current?Window?and?ensure?that?it?is?active
????????????Window.Current.Content?=?rootframe;
????????????Window.Current.Activate（）;
????????}

????????///?

????????///?Invoked?when?application?execution?is?being?suspended.??Application?state?is?saved
????????///?without?knowing?whether?the?application?will?be?terminated?or?resumed?with?the?contents
????????///?of?memory?still?intact.
????????///?

????????///?The?source?of?the?suspend?request.
????????///?Details?about?the?suspend?request.