using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Input; namespace SmartUI.Demo.Common { public class RelayCommand : ICommand { public event EventHandler CanExecuteChanged; private readonly Action _execute; public RelayCommand(Action execute) { _execute = execute; } public bool CanExecute(object parameter) => _execute != null; public void Execute(object parameter) { _execute(parameter); } } }