Q:

How to find lowest and highest time from list?

I have a string list holding time values in this format: 11:25:46.123, I would like to be able to find highest and lowest time value from this list. How can I do it? 
I tried something like this, but I am not sure if it is correct and I don't know what to do next.
List<TimeSpan> time = StringList.Select(x => TimeSpan.ParseExact(x, "HH:mm:ss.fff", null)).ToList();

EDIT:
I am getting error:
Input string was not in a correct format.

A:

I am getting error:
  Input string was not in a correct format.

Your timespan format is not correct. Try this
var StringList = new[] { "21:25:46.123" };
List<TimeSpan> time = StringList
                      .Select(x => TimeSpan.ParseExact(x, @"hh\:mm\:ss\.fff", null))
                      .ToList();
var max = time.Max();
var min = time.Min();

A:

Have you tried:
TimeSpan maxTimeSpan = time.Max();
TimeSpan minTimeSpan = time.Min();

A:

Try this
TimeSpan _maxtime= time.Max(); // For max time
TimeSpan _mintime= time.Min();// For min time

also take a look at MSDN

