Order data in descending order using AM/PM format in c sharp

Question

outputData = output.OrderByDescending(x => DateTime.ParseExact(x.modifiedDateTime, "MM/dd/yyyy hh:mm:ss", CultureInfo.InvariantCulture)).ToList();
in the above code x.modifiedDateTime stores date in MM/dd/yyyy hh:mm:ss format and we are ordering using MM/dd/yyyy hh:mm:ss format. But now i want to order using MM/dd/yyyy hh:mm:ss tt(AM/PM) format, how could this be done. also modifiedDateTime should be displayed  MM/dd/yyyy hh:mm:ss format
How could this be done. please help on this.

Amit Mohanty · Answer

outputData = output.OrderByDescending(x => DateTime.ParseExact(x.modifiedDateTime,
"MM/dd/yyyy hh:mm:ss tt", CultureInfo.InvariantCulture)).ToList();

Naimish Makwana · Answer

Try below code:
outputData = output.OrderByDescending(x => DateTime.ParseExact(x.modifiedDateTime, "MM/dd/yyyy hh:mm:ss tt", CultureInfo.InvariantCulture))
.Select(x => new { modifiedDateTime = DateTime.ParseExact(x.modifiedDateTime, "MM/dd/yyyy hh:mm:ss tt", CultureInfo.InvariantCulture).ToString("MM/dd/yyyy hh:mm:ss") })
.ToList();
Thanks
Naimish Makwana