Asynchronous AsyncResult类未进入回调函数
这是我的密码-Asynchronous AsyncResult类未进入回调函数,asynchronous,delegates,Asynchronous,Delegates,这是我的密码- DateTimeDelegate dtdel = new DateTimeDelegate(GetCurrentDateTimeAt); IAsyncResult async = dtdel.BeginInvoke(UserContext.Latitude.ToString(), UserContext.Longitude.ToString(), new AsyncCallback(DateTimeCallBack), null); 我该怎么办?该类在系统.运行时.远程处
DateTimeDelegate dtdel = new DateTimeDelegate(GetCurrentDateTimeAt);
IAsyncResult async = dtdel.BeginInvoke(UserContext.Latitude.ToString(), UserContext.Longitude.ToString(), new AsyncCallback(DateTimeCallBack), null);
我该怎么办?该类在系统.运行时.远程处理.消息传递
命名空间中定义。确保你已经包括了它。您还可以在MSDN上签出。该类是在System.Runtime.Remoting.Messaging
命名空间中定义的。确保你已经包括了它。您也可以在MSDN上签出
public DateTimeCallBack(IAsyncResult asy)
{
AsyncResult result = (AsyncResult)asy; // error 'AsyncResult' could not be found
}