regular expressions

Question

 regular expressions

" 4/21/2003 :     On 4/21/2003 6:02:49 PM By DBROWN ::      ;   
 On 4/21/2003 7:04:41 PM By DBROWN :: 
  called on 4/19 ;  "

from the above string

can any one tell me the pattern to

extract the date preceded by 'On ' and name preceded by 'By'

Answer 1

Regex r = new Regex(@"On\s+(?<MyDate>[\s\S]+)\s+By(?<MyName>[\s\S]+)",
        RegexOptions.Compiled);
            Console.WriteLine(r.Match(InString).Result("${MyDate}${MyName}"));

Hope this Help