如何从互联网获取DateTime？

Question

如何使用C＃从Internet或服务器获取当前日期和时间？我正在尝试获取时间，如下所示：public static DateTime GetNetworkTime (string ntpServer){    IPAddress[] address = Dns.GetHostEntry(ntpServer).AddressList;    if (address == null || address.Length == 0)        throw new ArgumentException("Could not resolve ip address from '" + ntpServer + "'.", "ntpServer");    IPEndPoint ep = new IPEndPoint(address[0], 123);    return GetNetworkTime(ep);}我将服务器IP地址作为传递netServer，但无法正常工作。