wpf 可通知界面的Delegate命令

public class SelfCheckCommand : ICommand

{

public SelfCheckCommand()

{

}

public SelfCheckCommand(Action<object> execAction, Func<object, bool> canExecte)

{

ExecuteAction = execAction;

CanExecuteFunc = canExecte;

}

private bool _canExecuteCache;

public bool CanExecute(object parameter)

{

if (CanExecuteFunc == null)

{

return true;

}

bool result = CanExecuteFunc(parameter);

if (result != _canExecuteCache)

{

_canExecuteCache = result;

}

return result;

}

public event EventHandler CanExecuteChanged

{

add { CommandManager.RequerySuggested += value; }

remove { CommandManager.RequerySuggested -= value; }

}

public void Execute(object parameter)

{

if (ExecuteAction != null)

{

this.ExecuteAction(parameter);

}

}

public Action<object> ExecuteAction { get; set; }

public Func<object, bool> CanExecuteFunc { get; set; }

}