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How to use RaiseCanExecuteChanged method of AppUIBasics.Common.RelayCommand class

Best WinAppDriver code snippet using AppUIBasics.Common.RelayCommand.RaiseCanExecuteChanged

RelayCommand.cs

Source:RelayCommand.cs

...9    /// <summary>10    /// A command whose sole purpose is to relay its functionality 11    /// to other objects by invoking delegates. 12    /// The default return value for the CanExecute method is 'true'.13    /// <see cref="RaiseCanExecuteChanged"/> needs to be called whenever14    /// <see cref="CanExecute"/> is expected to return a different value.15    /// </summary>16    public class RelayCommand : ICommand17    {18        private readonly Action _execute;19        private readonly Func<bool> _canExecute;20        /// <summary>21        /// Raised when RaiseCanExecuteChanged is called.22        /// </summary>23        public event EventHandler CanExecuteChanged;24        /// <summary>25        /// Creates a new command that can always execute.26        /// </summary>27        /// <param name="execute">The execution logic.</param>28        public RelayCommand(Action execute)29            : this(execute, null)30        {31        }32        /// <summary>33        /// Creates a new command.34        /// </summary>35        /// <param name="execute">The execution logic.</param>36        /// <param name="canExecute">The execution status logic.</param>37        public RelayCommand(Action execute, Func<bool> canExecute)38        {39            if (execute == null)40                throw new ArgumentNullException("execute");41            _execute = execute;42            _canExecute = canExecute;43        }44        /// <summary>45        /// Determines whether this <see cref="RelayCommand"/> can execute in its current state.46        /// </summary>47        /// <param name="parameter">48        /// Data used by the command. If the command does not require data to be passed, this object can be set to null.49        /// </param>50        /// <returns>true if this command can be executed; otherwise, false.</returns>51        public bool CanExecute(object parameter)52        {53            return _canExecute == null ? true : _canExecute();54        }55        /// <summary>56        /// Executes the <see cref="RelayCommand"/> on the current command target.57        /// </summary>58        /// <param name="parameter">59        /// Data used by the command. If the command does not require data to be passed, this object can be set to null.60        /// </param>61        public void Execute(object parameter)62        {63            _execute();64        }65        /// <summary>66        /// Method used to raise the <see cref="CanExecuteChanged"/> event67        /// to indicate that the return value of the <see cref="CanExecute"/>68        /// method has changed.69        /// </summary>70        public void RaiseCanExecuteChanged()71        {72            var handler = CanExecuteChanged;73            if (handler != null)74            {75                handler(this, EventArgs.Empty);76            }77        }78    }79}...

RaiseCanExecuteChanged

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.Controls.Primitives;9using Windows.UI.Xaml.Data;10using Windows.UI.Xaml.Input;11using Windows.UI.Xaml.Media;12using Windows.UI.Xaml.Navigation;13using AppUIBasics.Common;14using Windows.UI.Popups;15using Windows.UI.Xaml.Media.Imaging;16using Windows.UI.Xaml.Media.Animation;17using Windows.UI.Xaml.Shapes;18using Windows.UI;19using Windows.UI.Core;20using Windows.UI.ViewManagement;21using Windows.Foundation;22using Windows.UI.Xaml.Hosting;23using Windows.UI.Composition;24using Windows.UI.Xaml.Automation.Peers;25using Windows.UI.Xaml.Automation.Provider;26using Windows.Foundation.Metadata;27using Windows.UI.Xaml.Markup;28using Windows.UI.Xaml.Media.Media3D;29using Windows.UI.Xaml.Media.Animation;30using Windows.UI.Xaml.Media.Effects;31using Windows.UI.Xaml.Media.Imaging;32using Windows.UI.Xaml.Media;33using Windows.UI.Xaml.Controls.Primitives;34using Windows.UI.Xaml.Data;35using Windows.UI.Xaml.Input;36using Windows.UI.Xaml.Navigation;37using Windows.UI.Xaml;38using Windows.UI.Xaml.Controls;39using Windows.UI.Xaml.Markup;40using Windows.UI.Xaml.Media;41using Windows.UI.Xaml.Media.Animation;42using Windows.UI.Xaml.Media.Imaging;43using Windows.UI.Xaml.Media.Media3D;44using Windows.UI.Xaml.Media.Effects;45using Windows.UI.Xaml.Navigation;46using Windows.UI.Xaml.Automation;47using Windows.UI.Xaml.Automation.Peers;48using Windows.UI.Xaml.Automation.Provider;49using Windows.UI.Xaml.Controls.Primitives;50using Windows.UI.Xaml.Data;51using Windows.UI.Xaml.Input;52using Windows.UI.Xaml.Shapes;53using System;54using System.Collections.Generic;55using System.Linq;56using System.Text;57using System.Threading.Tasks;58using Windows.UI.Xaml;59using Windows.UI.Xaml.Controls;60using Windows.UI.Xaml.Controls.Primitives;61using Windows.UI.Xaml.Data;62using Windows.UI.Xaml.Input;63using Windows.UI.Xaml.Media;64using Windows.UI.Xaml.Navigation;65using AppUIBasics.Common;66using Windows.UI.Popups;67using Windows.UI.Xaml.Media.Imaging;68using Windows.UI.Xaml.Media.Animation;69using Windows.UI.Xaml.Shapes;70using Windows.UI;71using Windows.UI.Core;72using Windows.UI.ViewManagement;73using Windows.Foundation;74using Windows.UI.Xaml.Hosting;75using Windows.UI.Composition;76using Windows.UI.Xaml.Automation.Peers;77using Windows.UI.Xaml.Automation.Provider;78using Windows.Foundation.Metadata;79using Windows.UI.Xaml.Markup;80using Windows.UI.Xaml.Media.Media3D;81using Windows.UI.Xaml.Media.Animation;

RaiseCanExecuteChanged

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Windows.UI.Xaml.Controls;7using Windows.UI.Xaml.Navigation;8using AppUIBasics.Common;9{10    {11        private RelayCommand _buttonClickCommand;12        {13            {14                return _buttonClickCommand;15            }16            {17                _buttonClickCommand = value;18            }19        }20        public Page4()21        {22            this.InitializeComponent();23            ButtonClickCommand = new RelayCommand(OnButtonClick, CanButtonClick);24        }25        protected override void OnNavigatedTo(NavigationEventArgs e)26        {27            base.OnNavigatedTo(e);28            ButtonClickCommand.RaiseCanExecuteChanged();29        }30        private void OnButtonClick(object parameter)31        {32        }33        private bool CanButtonClick(object parameter)34        {35            return true;36        }37    }38}39    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">40        <Button Content="Click Me" Command="{Binding ButtonClickCommand}"/>41using System;42using System.Collections.Generic;43using System.IO;44using System.Linq;45using System.Runtime.InteropServices.WindowsRuntime;46using Windows.UI.Xaml;47using Windows.UI.Xaml.Controls;48using Windows.UI.Xaml.Controls.Primitives;49using Windows.UI.Xaml.Data;50using Windows.UI.Xaml.Input;51using Windows.UI.Xaml.Media;52using Windows.UI.Xaml.Navigation;53using AppUIBasics.Common;

RaiseCanExecuteChanged

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 AppUIBasics.Common;9using AppUIBasics.Data;10using AppUIBasics.ControlPages;11{12    {13        public RelayCommand ItemClickCommand { get; set; }14        public MainPage()15        {16            this.InitializeComponent();17            ItemClickCommand = new RelayCommand(OnItemClick);18        }19        private void OnItemClick(object obj)20        {21            var item = obj as Sample;22            if (item != null)23            {24                if (item.PageType != null)25                {26                    Frame.Navigate(item.PageType);27                }28            }29        }30    }31}32using System;33using System.Collections.Generic;34using System.Linq;35using System.Text;36using System.Threading.Tasks;37using Windows.UI.Xaml;38using Windows.UI.Xaml.Controls;39using AppUIBasics.Common;40using AppUIBasics.Data;41using AppUIBasics.ControlPages;42{43    {44        public RelayCommand ItemClickCommand { get; set; }45        public MainPage()46        {47            this.InitializeComponent();48            ItemClickCommand = new RelayCommand(OnItemClick);49        }50        private void OnItemClick(object obj)51        {52            var item = obj as Sample;53            if (item != null)54            {55                if (item.PageType != null)56                {57                    Frame.Navigate(item.PageType);58                }59            }60        }61    }62}63using System;64using System.Collections.Generic;65using System.Linq;66using System.Text;67using System.Threading.Tasks;68using Windows.UI.Xaml;69using Windows.UI.Xaml.Controls;70using AppUIBasics.Common;71using AppUIBasics.Data;72using AppUIBasics.ControlPages;73{74    {75        public RelayCommand ItemClickCommand { get; set; }76        public MainPage()77        {78            this.InitializeComponent();79            ItemClickCommand = new RelayCommand(OnItemClick);80        }81        private void OnItemClick(object obj)82        {

RaiseCanExecuteChanged

Using AI Code Generation

1using System;2using System.Diagnostics;3using System.Threading.Tasks;4using Windows.ApplicationModel;5using Windows.ApplicationModel.Activation;6using Windows.ApplicationModel.Core;7using Windows.Foundation;8using Windows.Foundation.Collections;9using Windows.UI.Core;10using Windows.UI.ViewManagement;11using Windows.UI.Xaml;12using Windows.UI.Xaml.Controls;13using Windows.UI.Xaml.Controls.Primitives;14using Windows.UI.Xaml.Data;15using Windows.UI.Xaml.Input;16using Windows.UI.Xaml.Media;17using Windows.UI.Xaml.Navigation;18using AppUIBasics.Common;19using AppUIBasics.ControlPages;20using AppUIBasics.Data;21using AppUIBasics.SamplePages;22using AppUIBasics.ViewModels;23using Windows.UI.Xaml.Media.Animation;24using Windows.UI.Xaml.Media.Imaging;25using Windows.UI.Xaml.Shapes;26using Windows.UI;27using Windows.UI.Xaml.Media;28using Windows.UI.Xaml.Media.Imaging;29using Windows.UI.Xaml.Shapes;30using Windows.UI;31using Windows.UI.Xaml.Media;32using Windows.UI.Xaml.Media.Imaging;33using Windows.UI.Xaml.Shapes;34using Windows.UI;35using Windows.UI.Xaml.Media;36using Windows.UI.Xaml.Media.Imaging;37using Windows.UI.Xaml.Shapes;38using Windows.UI;39using Windows.UI.Xaml.Media;40using Windows.UI.Xaml.Media.Imaging;41using Windows.UI.Xaml.Shapes;42using Windows.UI;43using Windows.UI.Xaml.Media;44using Windows.UI.Xaml.Media.Imaging;45using Windows.UI.Xaml.Shapes;46using Windows.UI;47using Windows.UI.Xaml.Media;48using Windows.UI.Xaml.Media.Imaging;49using Windows.UI.Xaml.Shapes;50using Windows.UI;51using Windows.UI.Xaml.Media;52using Windows.UI.Xaml.Media.Imaging;53using Windows.UI.Xaml.Shapes;54using Windows.UI;55using Windows.UI.Xaml.Media;56using Windows.UI.Xaml.Media.Imaging;57using Windows.UI.Xaml.Shapes;58using Windows.UI;59{60    {61        public static new App Current { get { return Application.Current as App; } }62        public App()63        {64            this.InitializeComponent();65            this.Suspending += OnSuspending;66            this.UnhandledException += App_UnhandledException;67        }68        protected override void OnLaunched(LaunchActivatedEventArgs e)69        {70            if (!(Window.Current.Content is Frame rootFrame))71            {72                rootFrame = new Frame();73                rootFrame.NavigationFailed += OnNavigationFailed;

RaiseCanExecuteChanged

Using AI Code Generation

1private void RaiseCanExecuteChanged()2{3    if (this.CanExecuteChanged != null)4    {5        this.CanExecuteChanged(this, EventArgs.Empty);6    }7}8private void RaiseCanExecuteChanged()9{10    if (this.CanExecuteChanged != null)11    {12        this.CanExecuteChanged(this, EventArgs.Empty);13    }14}15private void RaiseCanExecuteChanged()16{17    if (this.CanExecuteChanged != null)18    {19        this.CanExecuteChanged(this, EventArgs.Empty);20    }21}22private void RaiseCanExecuteChanged()23{24    if (this.CanExecuteChanged != null)25    {26        this.CanExecuteChanged(this, EventArgs.Empty);27    }28}29private void RaiseCanExecuteChanged()30{31    if (this.CanExecuteChanged != null)32    {33        this.CanExecuteChanged(this, EventArgs.Empty);34    }35}36private void RaiseCanExecuteChanged()37{38    if (this.CanExecuteChanged != null)39    {40        this.CanExecuteChanged(this, EventArgs.Empty);41    }42}43private void RaiseCanExecuteChanged()44{45    if (this.CanExecuteChanged != null)46    {47        this.CanExecuteChanged(this, EventArgs.Empty);48    }49}50private void RaiseCanExecuteChanged()51{52    if (this.CanExecuteChanged != null)53    {54        this.CanExecuteChanged(this, EventArgs.Empty);55    }56}57private void RaiseCanExecuteChanged()58{59    if (this.CanExecuteChanged != null)

RaiseCanExecuteChanged

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 AppUIBasics.Common;9{10    {11        public RelayCommand ButtonCommand { get; set; }12        public MainPage()13        {14            this.InitializeComponent();15            ButtonCommand = new RelayCommand(ButtonCommandExecute, ButtonCommandCanExecute);16        }17        private void ButtonCommandExecute()18        {19        }20        private bool ButtonCommandCanExecute()21        {22        }23        private void Button_Click(object sender, RoutedEventArgs e)24        {25            ButtonCommand.RaiseCanExecuteChanged();26        }27    }28}

RaiseCanExecuteChanged

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.IO;4using System.Linq;5using System.Runtime.InteropServices.WindowsRuntime;6using Windows.Foundation;7using Windows.Foundation.Collections;8using Windows.UI.Xaml;9using Windows.UI.Xaml.Controls;10using Windows.UI.Xaml.Controls.Primitives;11using Windows.UI.Xaml.Data;12using Windows.UI.Xaml.Input;13using Windows.UI.Xaml.Media;14using Windows.UI.Xaml.Navigation;15using AppUIBasics.Common;16{17    {18        public AppUIBasicsPage()19        {20            this.InitializeComponent();21        }22        private void CommandBar_Opened(object sender, object e)23        {24            CommandBar commandBar = sender as CommandBar;25            if (commandBar != null)26            {27                foreach (AppBarButton appBarButton in commandBar.PrimaryCommands)28                {29                    if (appBarButton.Label == "Save")30                    {31                        ((RelayCommand)appBarButton.Command).RaiseCanExecuteChanged();32                    }33                }34            }35        }36    }37}

RaiseCanExecuteChanged

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Windows.UI.Xaml.Controls;7{8    {9        private Action _action;10        private bool _canExecute = true;11        public RelayCommand(Action action)12        {13            _action = action;14        }15        public bool CanExecute(object parameter)16        {17            return _canExecute;18        }19        public void Execute(object parameter)20        {21            _action();22        }23        public event EventHandler CanExecuteChanged;24        public void RaiseCanExecuteChanged()25        {26            CanExecuteChanged?.Invoke(this, EventArgs.Empty);27        }28    }29}30using System;31using System.Collections.Generic;32using System.IO;33using System.Linq;34using System.Runtime.InteropServices.WindowsRuntime;35using Windows.Foundation;36using Windows.Foundation.Collections;37using Windows.UI.Xaml;38using Windows.UI.Xaml.Controls;39using Windows.UI.Xaml.Controls.Primitives;40using Windows.UI.Xaml.Data;41using Windows.UI.Xaml.Input;42using Windows.UI.Xaml.Media;43using Windows.UI.Xaml.Navigation;44using AppUIBasics.Common;45{46    {47        public RelayCommand NavigateCommand { get; set; }48        public MainPage()49        {50            this.InitializeComponent();51            NavigateCommand = new RelayCommand(Navigate);52            DataContext = this;53        }54        private void Navigate()55        {56        }57    }58}

RaiseCanExecuteChanged

Using AI Code Generation

1{2    private bool _isBusy;3    {4        {5            return _isBusy;6        }7        {8            _isBusy = value;9            RaisePropertyChanged(nameof(IsBusy));10        }11    }12    private RelayCommand _startCommand;13    {14        {15            if (_startCommand == null)16            {17                _startCommand = new RelayCommand(StartCommandExecute, StartCommandCanExecute);18            }19            return _startCommand;20        }21    }22    private async void StartCommandExecute()23    {24        IsBusy = true;25        await Task.Delay(5000);26        IsBusy = false;27    }28    private bool StartCommandCanExecute()29    {30        return !IsBusy;31    }32}33{34    private bool _isBusy;35    {36        {37            return _isBusy;38        }39        {40            _isBusy = value;41            RaisePropertyChanged(nameof(IsBusy));42            StartCommand.RaiseCanExecuteChanged();43        }44    }45    private RelayCommand _startCommand;46    {47        {48            if (_startCommand == null)49            {50                _startCommand = new RelayCommand(StartCommandExecute, StartCommandCanExecute);51            }52            return _startCommand;53        }54    }55    private async void StartCommandExecute()56    {57        IsBusy = true;58        await Task.Delay(5000);59        IsBusy = false;60    }61    private bool StartCommandCanExecute()62    {63        return !IsBusy;64    }65}66{67    private bool _isBusy;68    {69        {70            return _isBusy;71        }72        {73            _isBusy = value;74            RaisePropertyChanged(nameof(IsBusy));

RaiseCanExecuteChanged

Using AI Code Generation

1{2    public ViewModel()3    {4        MyCommand = new RelayCommand(OnMyCommand, CanExecuteMyCommand);5    }6    {7        get;8        private set;9    }10    private void OnMyCommand()11    {12    }13    private bool CanExecuteMyCommand()14    {15        return true;16    }17}18{19    public ViewModel()20    {21        MyCommand = new RelayCommand(OnMyCommand, CanExecuteMyCommand);22    }23    {24        get;25        private set;26    }27    private void OnMyCommand()28    {29    }30    private bool CanExecuteMyCommand()31    {32        return true;33    }34}35{36    public ViewModel()37    {38        MyCommand = new RelayCommand(OnMyCommand, CanExecuteMyCommand);39    }40    {41        get;42        private set;43    }44    private void OnMyCommand()45    {46    }47    private bool CanExecuteMyCommand()48    {49        return true;50    }51}52{53    public ViewModel()54    {55        MyCommand = new RelayCommand(OnMyCommand, CanExecuteMyCommand);56    }57    {58        get;59        private set;60    }

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