关于C#时间DateTime和时间戳

1、DateTime转时间戳

/// 

/// 时间转时间戳
/// 
/// 时间
/// 时间戳
public static long DateTimeToTimestamp(DateTime dateTime)
{
    DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
    return (long)(dateTime - startTime).TotalMilliseconds;
}

2、时间戳转DateTime

/// 

/// 时间戳转时间
/// 
/// 时间戳
/// 时间
public static DateTime ConvertStringToDateTime(long timeStamp)
{
    DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
    long lTime = long.Parse(timeStamp + "0000");
    TimeSpan toNow = new TimeSpan(lTime);
    return dtStart.Add(toNow);
}