public void SetCanExecute(bool value)
{
if (_canExecute == value)
{
return;
}
_canExecute = value;
var handlers = CanExecuteChanged?.GetInvocationList().OfType <EventHandler>().ToArray();
if (handlers == null)
{
return;
}
//Parallel.ForEach(handlers, (handler) =>
foreach (var handler in handlers)
{
var syncer = handler.Target as ISynchronizeInvoke;
if (syncer != null /*&& !dispatcherObject.CheckAccess()*/)
{
//lock (lockDispatch) toDispatch.Add(handler);
//Application.Current.Dispatcher
syncer.Invoke(handler, new object[0]);
//Invoke(DispatcherPriority.DataBind, handler, this, EventArgs.Empty);
}
else
{
Application.Current.Dispatcher.Invoke(DispatcherPriority.DataBind, handler, this,
EventArgs.Empty);
}
//handler(this, EventArgs.Empty); // note : this does not execute handler in target thread's context
}
//CanExecuteChanged?.Invoke(this, EventArgs.Empty);
}
