extract string with linq

Question

Is there a nice way to extract part of a string with linq, example: I have

string  s = "System.Collections.*";

or

string s2 = "System.Collections.Somethingelse.*";

my goal is to extract anything in the string without the last '.*'

thankx I am using C#

ChrisF · Accepted Answer · 2011-01-08 22:40:56Z

1

The simplest way might be to use String.LastIndexOf followed by String.Substring

int index = s.LastIndexOf('.');

string output = s.Substring(0, index);

Unless you have a specific requirement to use LINQ for learning purposes of course.

answered Jan 8, 2011 at 22:35

ChrisF

138k31 gold badges265 silver badges335 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Daniel A. White · Accepted Answer · 2011-01-08 22:34:57Z

0

You might want a regex instead. (.*)\.\*

answered Jan 8, 2011 at 22:34

Daniel A. White

192k49 gold badges389 silver badges473 bronze badges

Daniel I tried your regex but nothing changed. Maybe i did it wrong.

you should add additional \ to where appropriate, or if in C# use @ infront the string.

lunadir · Accepted Answer · 2012-12-14 10:10:57Z

0

With the regex:

string input="System.Collections.Somethingelse.*";
string output=Regex.Matches(input,@"\b.*\b").Value;

output is:

"System.Collections.Somethingelse"

(because "*" is not a word) although a simple

output=input.Replace(".*","");

would have worked :P

answered Dec 14, 2012 at 10:10

lunadir

3494 silver badges18 bronze badges