How to use SaveStateEventArgs method of AppUIBasics.Common.NavigationHelper class

Best WinAppDriver code snippet using AppUIBasics.Common.NavigationHelper.SaveStateEventArgs

NavigationHelper.cs

Source:NavigationHelper.cs

...131        public void OnNavigatedFrom(NavigationEventArgs e)132        {133            var frameState = SuspensionManager.SessionStateForFrame(this.Frame);134            var pageState = new Dictionary<string, object>();135            this.SaveState?.Invoke(this, new SaveStateEventArgs(pageState));136            frameState[_pageKey] = pageState;137        }138        #endregion139    }140    /// <summary>141    /// RootFrameNavigationHelper registers for standard mouse and keyboard142    /// shortcuts used to go back and forward. There should be only one143    /// RootFrameNavigationHelper per view, and it should be associated with the144    /// root frame.145    /// </summary>146    /// <example>147    /// To make use of RootFrameNavigationHelper, create an instance of the148    /// RootNavigationHelper such as in the constructor of your root page.149    /// <code>150    ///     public MyRootPage()151    ///     {152    ///         this.InitializeComponent();153    ///         this.rootNavigationHelper = new RootNavigationHelper(MyFrame);154    ///     }155    /// </code>156    /// </example>157    [Windows.Foundation.Metadata.WebHostHidden]158    public class RootFrameNavigationHelper159    {160        private Frame Frame { get; set; }161        SystemNavigationManager systemNavigationManager;162        private Microsoft.UI.Xaml.Controls.NavigationView CurrentNavView { get; set; }163        /// <summary>164        /// Initializes a new instance of the <see cref="RootNavigationHelper"/> class.165        /// </summary>166        /// <param name="rootFrame">A reference to the top-level frame.167        /// This reference allows for frame manipulation and to register navigation handlers.</param>168        public RootFrameNavigationHelper(Frame rootFrame, Microsoft.UI.Xaml.Controls.NavigationView currentNavView)169        {170            this.Frame = rootFrame;171            this.Frame.Navigated += (s, e) =>172            {173                // Update the Back button whenever a navigation occurs.174                UpdateBackButton();175            };176            this.CurrentNavView = currentNavView;177            // Handle keyboard and mouse navigation requests178            this.systemNavigationManager = SystemNavigationManager.GetForCurrentView();179            systemNavigationManager.BackRequested += SystemNavigationManager_BackRequested;180            // must register back requested on navview181            if (ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 6))182            {183                CurrentNavView.BackRequested += NavView_BackRequested;184            }185            // Listen to the window directly so we will respond to hotkeys regardless186            // of which element has focus.187            Window.Current.CoreWindow.Dispatcher.AcceleratorKeyActivated +=188                CoreDispatcher_AcceleratorKeyActivated;189            Window.Current.CoreWindow.PointerPressed +=190                this.CoreWindow_PointerPressed;191        }192        private void NavView_BackRequested(Microsoft.UI.Xaml.Controls.NavigationView sender, Microsoft.UI.Xaml.Controls.NavigationViewBackRequestedEventArgs args)193        {194            TryGoBack();195        }196        private bool TryGoBack()197        {198            // don't go back if the nav pane is overlayed199            if (this.CurrentNavView.IsPaneOpen && (this.CurrentNavView.DisplayMode == Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode.Compact || this.CurrentNavView.DisplayMode == Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode.Minimal))200            {201                return false;202            }203            bool navigated = false;204            if (this.Frame.CanGoBack)205            {206                this.Frame.GoBack();207                navigated = true;208            }209            210            return navigated;211        }212        private bool TryGoForward()213        {214            bool navigated = false;215            if (this.Frame.CanGoForward)216            {217                this.Frame.GoForward();218                navigated = true;219            }220            return navigated;221        }222        private void SystemNavigationManager_BackRequested(object sender, BackRequestedEventArgs e)223        {224            if (!e.Handled)225            {226                e.Handled = TryGoBack();227            }228        }229        private void UpdateBackButton()230        {231            if (ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 6))232            {233                this.CurrentNavView.IsBackEnabled = this.Frame.CanGoBack ? true : false;234            } else235            {236                systemNavigationManager.AppViewBackButtonVisibility = this.Frame.CanGoBack ? AppViewBackButtonVisibility.Visible : AppViewBackButtonVisibility.Collapsed;237            }238            239        }240        /// <summary>241        /// Invoked on every keystroke, including system keys such as Alt key combinations.242        /// Used to detect keyboard navigation between pages even when the page itself243        /// doesn't have focus.244        /// </summary>245        /// <param name="sender">Instance that triggered the event.</param>246        /// <param name="e">Event data describing the conditions that led to the event.</param>247        private void CoreDispatcher_AcceleratorKeyActivated(CoreDispatcher sender,248            AcceleratorKeyEventArgs e)249        {250            var virtualKey = e.VirtualKey;251            // Only investigate further when Left, Right, or the dedicated Previous or Next keys252            // are pressed253            if ((e.EventType == CoreAcceleratorKeyEventType.SystemKeyDown ||254                e.EventType == CoreAcceleratorKeyEventType.KeyDown) &&255                (virtualKey == VirtualKey.Left || virtualKey == VirtualKey.Right ||256                (int)virtualKey == 166 || (int)virtualKey == 167))257            {258                var coreWindow = Window.Current.CoreWindow;259                var downState = CoreVirtualKeyStates.Down;260                bool menuKey = (coreWindow.GetKeyState(VirtualKey.Menu) & downState) == downState;261                bool controlKey = (coreWindow.GetKeyState(VirtualKey.Control) & downState) == downState;262                bool shiftKey = (coreWindow.GetKeyState(VirtualKey.Shift) & downState) == downState;263                bool noModifiers = !menuKey && !controlKey && !shiftKey;264                bool onlyAlt = menuKey && !controlKey && !shiftKey;265                if (((int)virtualKey == 166 && noModifiers) ||266                    (virtualKey == VirtualKey.Left && onlyAlt))267                {268                    // When the previous key or Alt+Left are pressed navigate back269                    e.Handled = TryGoBack();270                }271                else if (((int)virtualKey == 167 && noModifiers) ||272                    (virtualKey == VirtualKey.Right && onlyAlt))273                {274                    // When the next key or Alt+Right are pressed navigate forward275                    e.Handled = TryGoForward();276                }277            }278        }279        /// <summary>280        /// Invoked on every mouse click, touch screen tap, or equivalent interaction.281        /// Used to detect browser-style next and previous mouse button clicks282        /// to navigate between pages.283        /// </summary>284        /// <param name="sender">Instance that triggered the event.</param>285        /// <param name="e">Event data describing the conditions that led to the event.</param>286        private void CoreWindow_PointerPressed(CoreWindow sender,287            PointerEventArgs e)288        {289            var properties = e.CurrentPoint.Properties;290            // Ignore button chords with the left, right, and middle buttons291            if (properties.IsLeftButtonPressed || properties.IsRightButtonPressed ||292                properties.IsMiddleButtonPressed)293                return;294            // If back or forward are pressed (but not both) navigate appropriately295            bool backPressed = properties.IsXButton1Pressed;296            bool forwardPressed = properties.IsXButton2Pressed;297            if (backPressed ^ forwardPressed)298            {299                e.Handled = true;300                if (backPressed) this.TryGoBack();301                if (forwardPressed) this.TryGoForward();302            }303        }304    }305    /// <summary>306    /// Represents the method that will handle the <see cref="NavigationHelper.LoadState"/>event307    /// </summary>308    public delegate void LoadStateEventHandler(object sender, LoadStateEventArgs e);309    /// <summary>310    /// Represents the method that will handle the <see cref="NavigationHelper.SaveState"/>event311    /// </summary>312    public delegate void SaveStateEventHandler(object sender, SaveStateEventArgs e);313    /// <summary>314    /// Class used to hold the event data required when a page attempts to load state.315    /// </summary>316    public class LoadStateEventArgs : EventArgs317    {318        /// <summary>319        /// The parameter value passed to <see cref="Frame.Navigate(Type, object)"/>320        /// when this page was initially requested.321        /// </summary>322        public object NavigationParameter { get; private set; }323        /// <summary>324        /// A dictionary of state preserved by this page during an earlier325        /// session.  This will be null the first time a page is visited.326        /// </summary>327        public Dictionary<string, object> PageState { get; private set; }328        /// <summary>329        /// Initializes a new instance of the <see cref="LoadStateEventArgs"/> class.330        /// </summary>331        /// <param name="navigationParameter">332        /// The parameter value passed to <see cref="Frame.Navigate(Type, object)"/>333        /// when this page was initially requested.334        /// </param>335        /// <param name="pageState">336        /// A dictionary of state preserved by this page during an earlier337        /// session.  This will be null the first time a page is visited.338        /// </param>339        public LoadStateEventArgs(object navigationParameter, Dictionary<string, object> pageState)340            : base()341        {342            this.NavigationParameter = navigationParameter;343            this.PageState = pageState;344        }345    }346    /// <summary>347    /// Class used to hold the event data required when a page attempts to save state.348    /// </summary>349    public class SaveStateEventArgs : EventArgs350    {351        /// <summary>352        /// An empty dictionary to be populated with serializable state.353        /// </summary>354        public Dictionary<string, object> PageState { get; private set; }355        /// <summary>356        /// Initializes a new instance of the <see cref="SaveStateEventArgs"/> class.357        /// </summary>358        /// <param name="pageState">An empty dictionary to be populated with serializable state.</param>359        public SaveStateEventArgs(Dictionary<string, object> pageState)360            : base()361        {362            this.PageState = pageState;363        }364    }365}...

SaveStateEventArgs

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.IO;4using System.Linq;5using System.Runtime.InteropServices.WindowsRuntime;6using Windows.ApplicationModel.DataTransfer;7using Windows.Foundation;8using Windows.Foundation.Collections;9using Windows.UI.Xaml;10using Windows.UI.Xaml.Controls;11using Windows.UI.Xaml.Controls.Primitive;12using Windows.UI.Xaml.Data;13using Windows.UI.Xaml.Input;14using Windows.UI.Xaml.Media;15using Windows.UI.Xaml.Navigation;16using AppUIBasics.Common;17using AppUIBasics.Data;18using AppUIBasics.ControlPages;19using AppUIBasics.SamplePages;20using AppUIBasics.ViewModels;21using System.Threading.Tasks;22using Windows.Storage;23using Windows.Storage.Pickers;24using Windows.UI.Popups;25using Windows.UI.Core;26using Windows.UI.Xaml.Media.Imaging;27using Windows.Storage.Streams;28using Windows.UI.Xaml.Media.Animation;29{30    {31        private NavigationHelper navigationHelper;32        private ObservableDictionary defaultViewModel = new ObservableDictionary();33        private DataTransferManager dataTransferManager = DataTransferManager.GetForCurrentView();34        private SampleDataGroup group;35        private SampleDataItem item;36        private bool isShared = false;37        public ItemPage()38        {39            this.InitializeComponent();40            this.navigationHelper = new NavigationHelper(this);41            this.navigationHelper.LoadState += navigationHelper_LoadState;42            this.navigationHelper.SaveState += navigationHelper_SaveState;43            this.dataTransferManager.DataRequested += DataRequested;44        }45        {46            get { return this.navigationHelper; }47        }48        {49            get { return this.defaultViewModel; }50        }51        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)52        {

SaveStateEventArgs

Using AI Code Generation

1using System;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5using AppUIBasics.Common;6{7    {8        private NavigationHelper navigationHelper;9        public Scenario4()10        {11            this.InitializeComponent();12            navigationHelper = new NavigationHelper(this);13            navigationHelper.LoadState += navigationHelper_LoadState;14            navigationHelper.SaveState += navigationHelper_SaveState;15        }16        private void navigationHelper_SaveState(object sender, SaveStateEventArgs e)17        {18            e.PageState["TextBoxValue"] = TextBox.Text;19        }20        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)21        {22            if (e.PageState != null && e.PageState.ContainsKey("TextBoxValue"))23            {24                TextBox.Text = e.PageState["TextBoxValue"].ToString();25            }26        }27        protected override void OnNavigatedTo(NavigationEventArgs e)28        {29            navigationHelper.OnNavigatedTo(e);30        }31        protected override void OnNavigatedFrom(NavigationEventArgs e)32        {33            navigationHelper.OnNavigatedFrom(e);34        }35    }36}37using System;38using Windows.UI.Xaml;39using Windows.UI.Xaml.Controls;40using Windows.UI.Xaml.Navigation;41using AppUIBasics.Common;42{43    {44        private NavigationHelper navigationHelper;45        public Scenario4()46        {47            this.InitializeComponent();48            navigationHelper = new NavigationHelper(this);49            navigationHelper.LoadState += navigationHelper_LoadState;50            navigationHelper.SaveState += navigationHelper_SaveState;51        }52        private void navigationHelper_SaveState(object sender, SaveStateEventArgs e)53        {54            e.PageState["TextBoxValue"] = TextBox.Text;55        }56        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)57        {58            if (e.PageState != null && e.PageState.ContainsKey("TextBoxValue"))59            {

SaveStateEventArgs

Using AI Code Generation

1using AppUIBasics.Common;2using AppUIBasics.Data;3using AppUIBasics.ViewModels;4using Windows.UI.Xaml.Controls;5using Windows.UI.Xaml.Navigation;6{7    {8        private NavigationHelper navigationHelper;9        private ObservableDictionary defaultViewModel = new ObservableDictionary();10        public Scenario4()11        {12            this.InitializeComponent();13            this.navigationHelper = new NavigationHelper(this);14            this.navigationHelper.LoadState += navigationHelper_LoadState;15            this.navigationHelper.SaveState += navigationHelper_SaveState;16        }17        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)18        {

SaveStateEventArgs

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.IO;4using System.Linq;5using System.Runtime.InteropServices.WindowsRuntime;6using Windows.ApplicationModel.DataTransfer;7using Windows.Foundation;8using Windows.Foundation.Collections;9using Windows.UI.Xaml;10using Windows.UI.Xaml.Controls;11using Windows.UI.Xaml.Controls.Primitives;12using Windows.UI.Xaml.Data;13using Windows.UI.Xaml.Input;14using Windows.UI.Xaml.Media;15using Windows.UI.Xaml.Navigation;16using AppUIBasics.Common;17using AppUIBasics.Data;18{19    {20        private NavigationHelper navigationHelper;21        private ObservableDictionary defaultViewModel = new ObservableDictionary();22        public Page4()23        {24            this.InitializeComponent();25            this.navigationHelper = new NavigationHelper(this);26            this.navigationHelper.LoadState += navigationHelper_LoadState;27            this.navigationHelper.SaveState += navigationHelper_SaveState;28        }29        {30            get { return this.navigationHelper; }31        }32        {33            get { return this.defaultViewModel; }34        }35        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)36        {

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    base.OnNavigatedFrom(e);4    navigationHelper.OnNavigatedFrom(e);5}6protected override void OnNavigatedTo(NavigationEventArgs e)7{8    base.OnNavigatedTo(e);9    navigationHelper.OnNavigatedTo(e);10}11protected override void OnNavigatedFrom(NavigationEventArgs e)12{13    base.OnNavigatedFrom(e);14    navigationHelper.OnNavigatedFrom(e);15}16protected override void OnNavigatedTo(NavigationEventArgs e)17{18    base.OnNavigatedTo(e);19    navigationHelper.OnNavigatedTo(e);20}21protected override void OnNavigatedFrom(NavigationEventArgs e)22{23    base.OnNavigatedFrom(e);24    navigationHelper.OnNavigatedFrom(e);25}26protected override void OnNavigatedTo(NavigationEventArgs e)27{28    base.OnNavigatedTo(e);29    navigationHelper.OnNavigatedTo(e);30}31protected override void OnNavigatedFrom(NavigationEventArgs e)32{33    base.OnNavigatedFrom(e);34    navigationHelper.OnNavigatedFrom(e);35}36protected override void OnNavigatedTo(NavigationEventArgs e)37{38    base.OnNavigatedTo(e);39    navigationHelper.OnNavigatedTo(e);40}

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    base.OnNavigatedFrom(e);4    NavigationHelper.OnNavigatedFrom(e);5}6protected override void OnNavigatedTo(NavigationEventArgs e)7{8    base.OnNavigatedTo(e);9    NavigationHelper.OnNavigatedTo(e);10}11private void SaveState(object sender, SaveStateEventArgs e)12{

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    base.OnNavigatedFrom(e);4    navigationHelper.OnNavigatedFrom(e);5}6protected override void OnNavigatedTo(NavigationEventArgs e)7{8    base.OnNavigatedTo(e);9    navigationHelper.OnNavigatedTo(e);10}11protected override void OnNavigatedFrom(NavigationEventArgs e)12{13    base.OnNavigatedFrom(e);14    navigationHelper.OnNavigatedFrom(e);15}16protected override void OnNavigatedTo(NavigationEventArgs e)17{18    base.OnNavigatedTo(e);19    navigationHelper.OnNavigatedTo(e);20}21protected override void OnNavigatedFrom(NavigationEventArgs e)22{23    base.OnNavigatedFrom(e);24    navigationHelper.OnNavigatedFrom(e);25}26protected override void OnNavigatedTo(NavigationEventArgs e)27{28    base.OnNavigatedTo(e);29    navigationHelper.OnNavigatedTo(e);30}31protected override void OnNavigatedFrom(NavigationEventArgs e)32{33    base.OnNavigatedFrom(e);34    navigationHelper.OnNavigatedFrom(e);35}36protected override void OnNavigatedTo(NavigationEventArgs e)37{38    base.OnNavigatedTo(e);39    navigationHelper.OnNavigatedTo(e);40}

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    base.OnNavigatedFrom(e);4    navigationHelper.OnNavigatedFrom(e);5}6protected override void OnNavigatedTo(NavigationEventArgs e)7{8    base.OnNavigatedTo(e);9    navigationHelper.OnNavigatedTo(e);10}11private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)12{13}14private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)15{16}17private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)18{19}20private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)21{22}23private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)24{25}26private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)27{28}29private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)30{31}32private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)33{34}

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    if (e.NavigationMode == NavigationMode.Back)4    {5        var frameState = SuspensionManager.SessionStateForFrame(Frame);6        var pageState = new Dictionary<string, object>();7        ((Common.NavigationHelper)NavigationHelper).SaveState(pageState);8        if (pageState.Any())9        {10            frameState[_pageKey] = pageState;11        }12    }13}14protected override void OnNavigatedTo(NavigationEventArgs e)15{16    NavigationHelper.OnNavigatedTo(e);17    if (e.NavigationMode != NavigationMode.Back)18    {19        var frameState = SuspensionManager.SessionStateForFrame(Frame);20        frameState.Remove(_pageKey);21    }22    {23        var frameState = SuspensionManager.SessionStateForFrame(Frame);24        if (frameState.ContainsKey(_pageKey))25        {26            var pageState = (Dictionary<string, object>)frameState[_pageKey];27            ((Common.NavigationHelper)NavigationHelper).LoadState(pageState);28        }29    }30}31protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)32{

SaveStateEventArgs

Using AI Code Generation

1using System;2using AppUIBasics.Common;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6    {7        private NavigationHelper navigationHelper;8        private ObservableDictionary defaultViewModel = new ObservableDictionary();9        public Scenario4()10        {11            this.InitializeComponent();12            this.navigationHelper = new NavigationHelper(this);13            this.navigationHelper.LoadState += navigationHelper_LoadState;14            this.navigationHelper.SaveState += navigationHelper_SaveState;15        }16        {17            get { return this.navigationHelper; }18        }19        {20            get { return this.defaultViewModel; }21        }22        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)23        {24protected override void OnNavigatedFrom(NavigationEventArgs e)25{26    base.OnNavigatedFrom(e);27    navigationHelper.OnNavigatedFrom(e);28}29protected override void OnNavigatedTo(NavigationEventArgs e)30{31    base.OnNavigatedTo(e);32    navigationHelper.OnNavigatedTo(e);33}34protected override void OnNavigatedFrom(NavigationEventArgs e)35{36    base.OnNavigatedFrom(e);37    navigationHelper.OnNavigatedFrom(e);38}39protected override void OnNavigatedTo(NavigationEventArgs e)40{41    base.OnNavigatedTo(e);42    navigationHelper.OnNavigatedTo(e);43}44protected override void OnNavigatedFrom(NavigationEventArgs e)45{46    base.OnNavigatedFrom(e);47    navigationHelper.OnNavigatedFrom(e);48}49protected override void OnNavigatedTo(NavigationEventArgs e)50{51    base.OnNavigatedTo(e);52    navigationHelper.OnNavigatedTo(e);53}

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    if (e.NavigationMode == NavigationMode.Back)4    {5        var frameState = SuspensionManager.SessionStateForFrame(Frame);6        var pageState = new Dictionary<string, object>();7        ((Common.NavigationHelper)NavigationHelper).SaveState(pageState);8        if (pageState.Any())9        {10            frameState[_pageKey] = pageState;11        }12    }13}14protected override void OnNavigatedTo(NavigationEventArgs e)15{16    NavigationHelper.OnNavigatedTo(e);17    if (e.NavigationMode != NavigationMode.Back)18    {19        var frameState = SuspensionManager.SessionStateForFrame(Frame);20        frameState.Remove(_pageKey);21    }22    {23        var frameState = SuspensionManager.SessionStateForFrame(Frame);24        if (frameState.ContainsKey(_pageKey))25        {26            var pageState = (Dictionary<string, object>)frameState[_pageKey];27            ((Common.NavigationHelper)NavigationHelper).LoadState(pageState);28        }29    }30}31protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)32{

SaveStateEventArgs

Using AI Code Generation

1using System;2using AppUIBasics.Common;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6    {7        private NavigationHelper navigationHelper;8        private ObservableDictionary defaultViewModel = new ObservableDictionary();9        public Scenario4()10        {11            this.InitializeComponent();12            this.navigationHelper = new NavigationHelper(this);13            this.navigationHelper.LoadState += navigationHelper_LoadState;14            this.navigationHelper.SaveState += navigationHelper_SaveState;15        }16        {17            get { return this.navigationHelper; }18        }19        {20            get { return this.defaultViewModel; }21        }22        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)23        {24        private ObservableDictionary defaultViewModel = new ObservableDictionary();25        public Page4()26        {27            this.InitializeComponent();28            this.navigationHelper = new NavigationHelper(this);29            this.navigationHelper.LoadState += navigationHelper_LoadState;30            this.navigationHelper.SaveState += navigationHelper_SaveState;31        }32        {33            get { return this.navigationHelper; }34        }35        {36            get { return this.defaultViewModel; }37        }38        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)39        {

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    base.OnNavigatedFrom(e);4    NavigationHelper.OnNavigatedFrom(e);5}6protected override void OnNavigatedTo(NavigationEventArgs e)7{8    base.OnNavigatedTo(e);9    NavigationHelper.OnNavigatedTo(e);10}11private void SaveState(object sender, SaveStateEventArgs e)12{

SaveStateEventArgs

Using AI Code Generation

1protected override void OnNavigatedFrom(NavigationEventArgs e)2{3    if (e.NavigationMode == NavigationMode.Back)4    {5        var frameState = SuspensionManager.SessionStateForFrame(Frame);6        var pageState = new Dictionary<string, object>();7        ((Common.NavigationHelper)NavigationHelper).SaveState(pageState);8        if (pageState.Any())9        {10            frameState[_pageKey] = pageState;11        }12    }13}14protected override void OnNavigatedTo(NavigationEventArgs e)15{16    NavigationHelper.OnNavigatedTo(e);17    if (e.NavigationMode != NavigationMode.Back)18    {19        var frameState = SuspensionManager.SessionStateForFrame(Frame);20        frameState.Remove(_pageKey);21    }22    {23        var frameState = SuspensionManager.SessionStateForFrame(Frame);24        if (frameState.ContainsKey(_pageKey))25        {26            var pageState = (Dictionary<string, object>)frameState[_pageKey];27            ((Common.NavigationHelper)NavigationHelper).LoadState(pageState);28        }29    }30}31protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)32{

SaveStateEventArgs

Using AI Code Generation

1using System;2using AppUIBasics.Common;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6    {7        private NavigationHelper navigationHelper;8        private ObservableDictionary defaultViewModel = new ObservableDictionary();9        public Scenario4()10        {11            this.InitializeComponent();12            this.navigationHelper = new NavigationHelper(this);13            this.navigationHelper.LoadState += navigationHelper_LoadState;14            this.navigationHelper.SaveState += navigationHelper_SaveState;15        }16        {17            get { return this.navigationHelper; }18        }19        {20            get { return this.defaultViewModel; }21        }22        private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)23        {

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