public static String GetTimestamp(DateTime value)

{

    return value.ToString("yyyyMMddHHmmssffff");

}

//  ...later on in the code

String timeStamp = GetTimestamp(new DateTime());

Console.WriteLine(timeStamp);

DateTime now = DateTime.Now;

        Console.WriteLine("NOW: " + now);

String timeStamp = GetTimestamp(new DateTime());

​

​

string timestamp = DateTimeOffset.UtcNow.DateTime.ToLocalTime().ToString("yyyy-MM-dd HHmmss");