private static DateTime?ParseDateTime(Directory gpsDirectory, DateTimeStyles dateTimeStyles)
{
var timeStamp = gpsDirectory.GetRationalArray(GpsDirectory.TagTimeStamp);
var dateStamp = gpsDirectory.GetString(GpsDirectory.TagDateStamp);
if (timeStamp == null || dateStamp == null)
{
return(null);
}
var hour = ParseRational(timeStamp[0], Convert.ToInt32);
var minute = ParseRational(timeStamp[1], Convert.ToInt32);
var second = ParseRational(timeStamp[2], Convert.ToInt32);