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

Best WinAppDriver code snippet using AppUIBasics.Common.SaveStateEventArgs.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 Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5using AppUIBasics.Common;6{7    {8        public Scenario4()9        {10            this.InitializeComponent();11        }12        protected override void OnNavigatedTo(NavigationEventArgs e)13        {14            if (e.Parameter != null)15            {16                SaveStateEventArgs pageState = e.Parameter as SaveStateEventArgs;17                if (pageState != null)18                {19                    if (pageState.PageState.ContainsKey("TextBoxContent"))20                        TextBoxContent.Text = pageState.PageState["TextBoxContent"] as string;21                }22            }23        }24        protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)25        {26            SaveStateEventArgs pageState = new SaveStateEventArgs();27            pageState.PageState["TextBoxContent"] = TextBoxContent.Text;28            e.Parameter = pageState;29        }30    }31}32using System;33using Windows.UI.Xaml;34using Windows.UI.Xaml.Controls;35using Windows.UI.Xaml.Navigation;36using AppUIBasics.Common;37{38    {39        public Scenario5()40        {41            this.InitializeComponent();42        }43        protected override void OnNavigatedTo(NavigationEventArgs e)44        {45            if (e.Parameter != null)46            {47                SaveStateEventArgs pageState = e.Parameter as SaveStateEventArgs;48                if (pageState != null)49                {50                    if (pageState.PageState.ContainsKey("TextBoxContent"))51                        TextBoxContent.Text = pageState.PageState["TextBoxContent"] as string;52                }53            }54        }55        protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)56        {57            SaveStateEventArgs pageState = new SaveStateEventArgs();58            pageState.PageState["TextBoxContent"] = TextBoxContent.Text;59            e.Parameter = pageState;60        }61    }62}63using System;64using Windows.UI.Xaml;

SaveStateEventArgs

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Windows.UI.Xaml;7using Windows.UI.Xaml.Controls;8using Windows.UI.Xaml.Data;9using Windows.UI.Xaml.Documents;10using Windows.UI.Xaml.Input;11using Windows.UI.Xaml.Media;12using Windows.UI.Xaml.Navigation;13using AppUIBasics.Common;14{15    {16        public SaveStateEventArgs()17        {18            this.InitializeComponent();19        }20        protected override void OnNavigatedTo(NavigationEventArgs e)21        {22            var state = e.Parameter as SaveStateEventArgs;23            if (state != null && state.PageState != null)24            {25                if (state.PageState.ContainsKey("textBox"))26                {27                    textBox.Text = state.PageState["textBox"] as string;28                }29            }30        }31        protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)32        {33            var state = e.Parameter as SaveStateEventArgs;34            if (state != null)35            {36                state.PageState["textBox"] = textBox.Text;37            }38        }39    }40}41using System;42using System.Collections.Generic;43using System.Linq;44using System.Text;45using System.Threading.Tasks;46using Windows.UI.Xaml;47using Windows.UI.Xaml.Controls;48using Windows.UI.Xaml.Data;49using Windows.UI.Xaml.Documents;50using Windows.UI.Xaml.Input;51using Windows.UI.Xaml.Media;52using Windows.UI.Xaml.Navigation;53using AppUIBasics.Common;54{55    {56        public SaveStateEventArgs()57        {58            this.InitializeComponent();59        }60        protected override void OnNavigatedTo(NavigationEventArgs e)61        {62            var state = e.Parameter as SaveStateEventArgs;63            if (state != null && state.Page

SaveStateEventArgs

Using AI Code Generation

1using System;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6    {7        public NavigationMode NavigationMode { get; private set; }8        public object PageState { get; private set; }9        public SaveStateEventArgs(NavigationMode mode, object state)10        {11            this.NavigationMode = mode;12            this.PageState = state;13        }14    }15    {16        private readonly Dictionary<string, object> pageState = new Dictionary<string, object>();17        private readonly List<WeakReference> registeredEvents = new List<WeakReference>();18        public SaveStateHelper()19        {20        }21        public void RegisterEvents(Page page, NavigationMode mode)22        {23            this.RegisterEvents(page, mode, null);24        }25        public void RegisterEvents(Page page, NavigationMode mode, object state)26        {27            page.Loaded += this.OnPageLoaded;28            page.Unloaded += this.OnPageUnloaded;29            this.pageState[page.GetHashCode().ToString()] = state;30            if (mode == NavigationMode.New)31            {32                this.CleanUpState(page);33            }34        }35        public void UnregisterEvents(Page page)36        {37            page.Loaded -= this.OnPageLoaded;38            page.Unloaded -= this.OnPageUnloaded;39            this.pageState.Remove(page.GetHashCode().ToString());40        }41        public object GetPageState(Page page)42        {43            object state = null;44            this.pageState.TryGetValue(page.GetHashCode().ToString(), out state);45            return state;46        }47        private void OnPageLoaded(object sender, RoutedEventArgs e)48        {49            Page page = sender as Page;50            if (page != null)51            {52                this.CleanUpState(page);53                var frame = page.Parent as Frame;54                if (frame != null)55                {56                    var state = this.GetPageState(page);57                    var args = new SaveStateEventArgs(frame.BackStackDepth > 0 ? NavigationMode.Back : NavigationMode.New, state);58                    this.InvokeHandler(page, "LoadState", args);59                }60            }61        }62        private void OnPageUnloaded(object sender, RoutedEventArgs e)63        {64            Page page = sender as Page;65            if (page != null)66            {67                var frame = page.Parent as Frame;68                if (frame != null)69                {

SaveStateEventArgs

Using AI Code Generation

1using System;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5using AppUIBasics.Common;6using System.Collections.Generic;7using System.Collections.ObjectModel;8{9    {10        public SaveStateEventArgs()11        {12            this.InitializeComponent();13            this.NavigationCacheMode = Windows.UI.Xaml.Navigation.NavigationCacheMode.Enabled;14        }15        private void SaveStateEventArgs_Loaded(object sender, RoutedEventArgs e)16        {17            if (this.NavigationContext.QueryString.ContainsKey("list"))18            {19                string list = this.NavigationContext.QueryString["list"];20                if (list == "1")21                {22                    this.DefaultViewModel["Items"] = AppUIBasics.SampleDataSource.GetGroup("Group-1").Items;23                }24                else if (list == "2")25                {26                    this.DefaultViewModel["Items"] = AppUIBasics.SampleDataSource.GetGroup("Group-2").Items;27                }28            }29        }30        protected override void OnNavigatedFrom(NavigationEventArgs e)31        {32            e.Parameter = this.DefaultViewModel["Items"];33        }34    }35}36using System;37using Windows.UI.Xaml;38using Windows.UI.Xaml.Controls;39using Windows.UI.Xaml.Navigation;40using AppUIBasics.Common;41using System.Collections.Generic;42using System.Collections.ObjectModel;43{44    {45        public SaveStateEventArgs()46        {47            this.InitializeComponent();48            this.NavigationCacheMode = Windows.UI.Xaml.Navigation.NavigationCacheMode.Enabled;49        }50        private void SaveStateEventArgs_Loaded(object sender, RoutedEventArgs e)51        {52            if (this.NavigationContext.QueryString.ContainsKey("list"))53            {54                string list = this.NavigationContext.QueryString["list"];55                if (list == "1")56                {57                    this.DefaultViewModel["Items"] = AppUIBasics.SampleDataSource.GetGroup("Group-1").Items;58                }59                else if (list == "2")60                {61                    this.DefaultViewModel["Items"] = AppUIBasics.SampleDataSource.GetGroup("Group-2").Items;62                }63            }64        }65        protected override void OnNavigatedFrom(NavigationEventArgs e)66        {

SaveStateEventArgs

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Windows.UI.Xaml;7{8    {9        public Dictionary<string, object> PageState { get; private set; }10        public bool SuspensionManagerSessionState { get; private set; }11        public SaveStateEventArgs(Dictionary<string, object> pageState, bool suspending)12        {13            this.PageState = pageState;14            this.SuspensionManagerSessionState = suspending;15        }16    }17}18using System;19using System.Collections.Generic;20using System.Linq;21using System.Text;22using System.Threading.Tasks;23using Windows.UI.Xaml.Navigation;24{25    {26        public Dictionary<string, object> PageState { get; private set; }27        public LoadStateEventArgs(object parameter, Type sourcePageType, Dictionary<string, object> pageState)28            : base(parameter, sourcePageType)29        {30            this.PageState = pageState;31        }32    }33}34using System;35using System.Collections.Generic;36using System.Linq;37using System.Text;38using System.Threading.Tasks;39using Windows.UI.Xaml.Controls;40{41    {42        public Dictionary<string, object> PageState { get; private set; }43        public bool SuspensionManagerSessionState { get; private set; }44        public SaveStateEventArgs(Dictionary<string, object> pageState, bool suspending)45        {46            this.PageState = pageState;47            this.SuspensionManagerSessionState = suspending;48        }49    }50}51using System;52using System.Collections.Generic;53using System.Linq;54using System.Text;55using System.Threading.Tasks;56using Windows.UI.Xaml.Navigation;57{

SaveStateEventArgs

Using AI Code Generation

1{2    public MainPage()3    {4        this.InitializeComponent();5    }6    protected override void OnNavigatedTo(NavigationEventArgs e)7    {8        var args = e.Parameter as SaveStateEventArgs;9        if (args != null)10        {11            var state = args.PageState;12            if (state != null)13            {14                if (state.ContainsKey("text"))15                {16                    textBlock.Text = state["text"] as string;17                }18            }19        }20    }21}22{23    public MainPage()24    {25        this.InitializeComponent();26    }27    protected override void OnNavigatedTo(NavigationEventArgs e)28    {29        var args = e.Parameter as SaveStateEventArgs;30        if (args != null)31        {32            var state = args.PageState;33            if (state != null)34            {35                if (state.ContainsKey("text"))36                {37                    textBlock.Text = state["text"] as string;38                }39            }40        }41    }42}43{44    public MainPage()45    {46        this.InitializeComponent();47    }48    protected override void OnNavigatedTo(NavigationEventArgs e)49    {50        var args = e.Parameter as SaveStateEventArgs;51        if (args != null)52        {53            var state = args.PageState;54            if (state != null)55            {56                if (state.ContainsKey("text"))57                {58                    textBlock.Text = state["text"] as string;59                }60            }61        }62    }63}64{65    public MainPage()66    {67        this.InitializeComponent();68    }69    protected override void OnNavigatedTo(NavigationEventArgs e)70    {71        var args = e.Parameter as SaveStateEventArgs;72        if (args != null)73        {74            var state = args.PageState;75            if (state != null)

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;7using Windows.ApplicationModel.Activation;8using Windows.Foundation;9using Windows.Foundation.Collections;10using Windows.UI.Xaml;11using Windows.UI.Xaml.Controls;12using Windows.UI.Xaml.Controls.Primitive;13using Windows.UI.Xaml.Data;14using Windows.UI.Xaml.Input;15using Windows.UI.Xaml.Media;16using Windows.UI.Xaml.Navigation;17{18    {19        public App()20        {21            this.InitializeComponent();22            this.Suspending += OnSuspending;23        }24        protected override void OnLaunched(LaunchActivatedEventArgs args)25        {26            Frame rootFrame = Window.Current.Content as Frame;27            if (rootFrame == null)28            {29                rootFrame = new Frame();

SaveStateEventArgs

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Windows.UI.Xaml;7{8    {9        public SaveStateEventArgs() { }10        public SaveStateEventArgs(Dictionary<string, object> pageState)11        {12            PageState = pageState;13        }14        public Dictionary<string, object> PageState { get; set; }15    }16}17        Public Sub New()18        Public Sub New(pageState As Dictionary(Of String, Object))19        Public Property PageState As Dictionary(Of String, Object)20using System;21using System.Collections.Generic;22using Windows.UI.Xaml.Navigation;23{24    {25        public LoadStateEventArgs(NavigationEventArgs e, Dictionary<string, object> pageState)26        {27            NavigationEventArgs = e;28            PageState = pageState;29        }30        public NavigationEventArgs NavigationEventArgs { get; private set; }31        public Dictionary<string, object> PageState { get; private set; }32    }33}

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