using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Input; namespace _20230724_MBJC_upperpc.Common { public class RelayCommand : ICommand { private readonly Action execute; private readonly Func canExecute; public RelayCommand(Action execute, Func canExecute = null) { this.execute = execute ?? throw new ArgumentNullException(nameof(execute)); this.canExecute = canExecute; } public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager.RequerySuggested -= value; } } public bool CanExecute(object parameter) { return canExecute == null || canExecute(parameter); } public void Execute(object parameter) { execute(parameter); } } }