如何使用C＃從Internet或服務器獲取當前日期和時間？我正在嘗試獲取時間，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);}我將服務器IP地址作為傳遞netServer，但無法正常工作。