Regular Expression

Question

Hi I need a simple help... can any one tel me in regular expression how can check only number of chracter.. Eg: hav to print first 3 character. if print 4th character it shuld be error.

Alan · Answer

I can't imagine why you'd want to do this using RE when you can just use string.Length but the following code should count all characters (including '
') in a given string: using System; using System.Text.RegularExpressions; class Program { static void Main() { string s = The quick brown fox jumped over the lazy dog. 7#
; Regex r = new Regex (.|
); // '.' matches any character except '
' MatchCollection mc = r.Matches(s); Console.WriteLine(mc.Count); // 50 Console.ReadLine(); } }