TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

How to use CanExecute method of WpfApplication.Infrastructure.RelayCommand class

Best FlaUI code snippet using WpfApplication.Infrastructure.RelayCommand.CanExecute

RelayCommand.cs

Source:RelayCommand.cs

...14            _methodToExecute = methodToExecute;15            _canExecuteEvaluator = canExecuteEvaluator;16        }17        [DebuggerStepThrough]18        public bool CanExecute(object parameter)19        {20            return _canExecuteEvaluator == null || _canExecuteEvaluator.Invoke(parameter);21        }22        public event EventHandler CanExecuteChanged23        {24            add => CommandManager.RequerySuggested += value;25            remove => CommandManager.RequerySuggested -= value;26        }27        public void Execute(object parameter)28        {29            _methodToExecute.Invoke(parameter);30        }31    }32}...

CanExecute

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Windows;6using System.Windows.Controls;7using System.Windows.Data;8using System.Windows.Documents;9using System.Windows.Input;10using System.Windows.Media;11using System.Windows.Media.Imaging;12using System.Windows.Shapes;13using WpfApplication.Infrastructure;14{15    {16        public Window1()17        {18            InitializeComponent();19        }20        private void Button_Click(object sender, RoutedEventArgs e)21        {22            RelayCommand cmd = new RelayCommand(ExecuteMethod, CanExecuteMethod);23            cmd.Execute(null);24        }25        private void ExecuteMethod(object param)26        {27            MessageBox.Show("Command Executed");28        }29        private bool CanExecuteMethod(object param)30        {31            return true;32        }33    }34}35using System;36using System.Collections.Generic;37using System.Linq;38using System.Text;39using System.Windows;40using System.Windows.Controls;41using System.Windows.Data;42using System.Windows.Documents;43using System.Windows.Input;44using System.Windows.Media;45using System.Windows.Media.Imaging;46using System.Windows.Shapes;47using WpfApplication.Infrastructure;48{49    {50        public Window1()51        {52            InitializeComponent();53        }54        private void Button_Click(object sender, RoutedEventArgs e)55        {56            RelayCommand cmd = new RelayCommand(ExecuteMethod, CanExecuteMethod);57            cmd.Execute(null);58        }59        private void ExecuteMethod(object param)60        {61            MessageBox.Show("Command Executed");62        }63        private bool CanExecuteMethod(object param)64        {65            return false;66        }67    }68}69using System;70using System.Collections.Generic;

CanExecute

Using AI Code Generation

1using System;2using System.Windows;3using System.Windows.Input;4using WpfApplication.Infrastructure;5{6    {7        public MainWindow()8        {9            InitializeComponent();10        }11        private void Button_Click(object sender, RoutedEventArgs e)12        {13            MessageBox.Show("Button Clicked");14        }15        private void Button_Click_1(object sender, RoutedEventArgs e)16        {17            MessageBox.Show("Button Clicked");18        }19        private void Button_Click_2(object sender, RoutedEventArgs e)20        {21            MessageBox.Show("Button Clicked");22        }23    }24}25using System;26using System.Windows;27using System.Windows.Input;28using WpfApplication.Infrastructure;29using WpfApplication.ViewModels;30{31    {32        public MainWindow()33        {34            InitializeComponent();35            this.DataContext = new MainWindowViewModel();36        }37    }38}39using System;40using System.Windows;41using System.Windows.Input;42using WpfApplication.Infrastructure;43using WpfApplication.ViewModels;44{45    {46        public MainWindow()47        {48            InitializeComponent();49            this.DataContext = new MainWindowViewModel();50        }51    }52}53using System;54using System.Windows;55using System.Windows.Input;56using WpfApplication.Infrastructure;57using WpfApplication.ViewModels;58{59    {60        public MainWindow()61        {62            InitializeComponent();63            this.DataContext = new MainWindowViewModel();64        }65    }66}67using System;68using System.Windows;69using System.Windows.Input;70using WpfApplication.Infrastructure;71using WpfApplication.ViewModels;72{73    {74        public MainWindow()75        {76            InitializeComponent();77            this.DataContext = new MainWindowViewModel();78        }79    }80}81using System;82using System.Windows;

CanExecute

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using System.Windows.Input;7{8    {9        readonly Action<object> _execute;10        readonly Predicate<object> _canExecute;11        public RelayCommand(Action<object> execute)12            : this(execute, null)13        {14        }15        public RelayCommand(Action<object> execute, Predicate<object> canExecute)16        {17            if (execute == null)18                throw new ArgumentNullException("execute");19            _execute = execute;20            _canExecute = canExecute;21        }22        public bool CanExecute(object parameter)23        {24            return _canExecute == null ? true : _canExecute(parameter);25        }26        {27            add { CommandManager.RequerySuggested += value; }28            remove { CommandManager.RequerySuggested -= value; }29        }30        public void Execute(object parameter)31        {32            _execute(parameter);33        }34    }35}36using System;37using System.Collections.Generic;38using System.Linq;39using System.Text;40using System.Threading.Tasks;41using System.Windows;42using System.Windows.Controls;43{44    {45        readonly Action<T> _execute;46        readonly Predicate<T> _canExecute;47        public RelayCommand(Action<T> execute)48            : this(execute, null)49        {50        }51        public RelayCommand(Action<T> execute, Predicate<T> canExecute)52        {53            if (execute == null)54                throw new ArgumentNullException("execute");55            _execute = execute;56            _canExecute = canExecute;57        }58        public bool CanExecute(object parameter)59        {60            return _canExecute == null ? true : _canExecute((T)parameter);61        }62        {63            add { CommandManager.RequerySuggested += value; }64            remove { Command

CanExecute

Using AI Code Generation

1using System;2using System.Windows;3using System.Windows.Input;4using WpfApplication.Infrastructure;5{6    {7        public MainWindow()8        {9            InitializeComponent();10        }11        private void btnAdd_Click(object sender, RoutedEventArgs e)12        {13            MessageBox.Show("You clicked on Add button");14        }15        private void btnEdit_Click(object sender, RoutedEventArgs e)16        {17            MessageBox.Show("You clicked on Edit button");18        }19        private void btnDelete_Click(object sender, RoutedEventArgs e)20        {21            MessageBox.Show("You clicked on Delete button");22        }

CanExecute

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Windows;6using System.Windows.Input;7using WpfApplication.Infrastructure;8{9    {10        public ICommand MyCommand { get; set; }11        public ICommand MyCommand2 { get; set; }12        public MainViewModel()13        {14            MyCommand = new RelayCommand(param => MyMethod(), param => CanExecuteMethod());15            MyCommand2 = new RelayCommand(param => MyMethod2());16        }17        private void MyMethod()18        {19            MessageBox.Show("MyMethod");20        }21        private void MyMethod2()22        {23            MessageBox.Show("MyMethod2");24        }25        private bool CanExecuteMethod()26        {27            return false;28        }29    }30}31using System;32using System.Collections.Generic;33using System.Linq;34using System.Text;35using System.Windows;36using System.Windows.Input;37using WpfApplication.Infrastructure;38{39    {40        public ICommand MyCommand { get; set; }41        public ICommand MyCommand2 { get; set; }42        public MainViewModel()43        {44            MyCommand = new RelayCommand(param => MyMethod(), param => CanExecuteMethod());45            MyCommand2 = new RelayCommand(param => MyMethod2());46        }47        private void MyMethod()48        {49            MessageBox.Show("MyMethod");50        }51        private void MyMethod2()52        {53            MessageBox.Show("MyMethod2");54        }55        private bool CanExecuteMethod()56        {57            return false;58        }59    }60}61using System;62using System.Collections.Generic;63using System.Linq;64using System.Text;65using System.Windows;66using System.Windows.Input;67using WpfApplication.Infrastructure;68{69    {70        public ICommand MyCommand { get; set; }71        public ICommand MyCommand2 { get; set; }72        public MainViewModel()73        {74            MyCommand = new RelayCommand(param => MyMethod(), param => CanExecuteMethod());75            MyCommand2 = new RelayCommand(param => MyMethod2());76        }77        private void MyMethod()78        {79            MessageBox.Show("MyMethod");80        }

CanExecute

Using AI Code Generation

1using System.Windows;2using System.Windows.Input;3{4    {5        public Window1()6        {7            InitializeComponent();8            this.DataContext = new ViewModel();9        }10    }11    {12        public ViewModel()13        {14            this.MyCommand = new RelayCommand(ExecuteMethod, CanExecuteMethod);15        }16        public ICommand MyCommand { get; set; }17        private void ExecuteMethod(object obj)18        {19            MessageBox.Show("Command Executed");20        }21        private bool CanExecuteMethod(object obj)22        {23            return true;24        }25    }26}

CanExecute

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Windows.Input;6using WpfApplication.Infrastructure;7{8    {9        private string _commandOneText = "Command 1";10        private string _commandTwoText = "Command 2";11        private string _commandThreeText = "Command 3";12        public ViewModel()13        {14            CommandOne = new RelayCommand(() => CommandOneText = "Command 1 executed", () => true);15            CommandTwo = new RelayCommand(() => CommandTwoText = "Command 2 executed", () => true);16            CommandThree = new RelayCommand(() => CommandThreeText = "Command 3 executed", () => true);17        }18        public ICommand CommandOne { get; set; }19        public ICommand CommandTwo { get; set; }20        public ICommand CommandThree { get; set; }21        {22            get { return _commandOneText; }23            {24                _commandOneText = value;25                OnPropertyChanged("CommandOneText");26            }27        }28        {29            get { return _commandTwoText; }30            {31                _commandTwoText = value;32                OnPropertyChanged("CommandTwoText");33            }34        }35        {36            get { return _commandThreeText; }37            {38                _commandThreeText = value;39                OnPropertyChanged("CommandThreeText");40            }41        }42    }43}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.