Converting a Time String to 24hr Time as Time Only

Question

How can I convert a string representing 12-hour time into a time-only, 24hr format? Here's my code so far.

string[] ar;
string s = "7:00 AM - 9:00 AM";
ar = s.Split('-');
s = String.Format("{0:HH:mm:ss}", ar[0]);

Answer 1

string[] ar;
string s = "7:00 AM - 9:00 AM";
ar = s.Split('-');
DateTime dateTime = DateTime.Parse(ar[0]);
dateTime.ToString("HH:mm");

Answer 2

  string s = "7:00 PM";
  DateTime dt = Convert.ToDateTime(s);
  Console.WriteLine(dt.ToString("HH:mm"));

Answer 3

Try this way

string[] ar;
        string s = "7:00 AM - 9:00 AM";
        ar = s.Split('-');
        s = Convert.ToDatetime(ar[0]).ToString("HH:mm");