1
점점 나의 코드 -AsyncResult 클래스는 여기 콜백 함수
DateTimeDelegate dtdel = new DateTimeDelegate(GetCurrentDateTimeAt);
IAsyncResult async = dtdel.BeginInvoke(UserContext.Latitude.ToString(), UserContext.Longitude.ToString(), new AsyncCallback(DateTimeCallBack), null);
...
public DateTimeCallBack(IAsyncResult asy)
{
AsyncResult result = (AsyncResult)asy; // error 'AsyncResult' could not be found
}
어떻게해야합니까?