public static IAsyncResult BeginGetHostByName(string hostName, AsyncCallback requestCallback, object stateObject)
{
if (hostName == null)
{
throw new ArgumentNullException("hostName");
}
Dns.GetHostByNameCallback getHostByNameCallback = new Dns.GetHostByNameCallback(Dns.GetHostByName);
return(getHostByNameCallback.BeginInvoke(hostName, requestCallback, stateObject));
}
public static IPHostEntry EndGetHostByName(IAsyncResult asyncResult)
{
if (asyncResult == null)
{
throw new ArgumentNullException("asyncResult");
}
AsyncResult asyncResult2 = (AsyncResult)asyncResult;
Dns.GetHostByNameCallback getHostByNameCallback = (Dns.GetHostByNameCallback)asyncResult2.AsyncDelegate;
return(getHostByNameCallback.EndInvoke(asyncResult));
}
