Search string for a list value using linq

Question

0.00/5 (No votes)

See more:

Hi all, my Linq learning continues, say I have a List containing

C#

{"Pete","Lynne"};

and a string containing

C#

"This is a string and may or may not contain a word we are looking for like Pete"

How can I search the string for any word in my list ?

What I have tried:

Googling but only found examples that search lists not the string

Posted 27-Mar-16 0:50am

pkfox

Updated 27-Mar-16 1:14am

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Thomas Daniels · Accepted Answer · 2016-03-27T01:02:00

C#

string input = "This is a string and may or may not contain a word we are looking for like Pete";
List<string> search = new List<string>() { "Pete", "Lynne"};
bool found = input.Split(' ').Any(x => search.Contains(x));

It works like this: the string gets split into an array of words. Then Any checks whether there is an x in this array where search.Contains(x).

Enumerable.Any(TSource) Method (IEnumerable(TSource)) (System.Linq)[^]

Sascha Lefèvre · Accepted Answer · 2016-03-27T01:14:00

Solution 2

I think you meant it the other way around, like this:

C#

string input = "This is a string and may or may not contain a word we are looking for like Pete";
List<string> search = new List<string>() { "Pete", "Lynne" };
bool found = search.Any(s => input.Contains(s));

The last line is equivalent to:

C#

bool found = search.Where(s => input.Contains(s)).Any();

Posted 27-Mar-16 1:14am

Sascha Lefèvre

Comments

pkfox 27-Mar-16 8:03am

Thanks very much I always forget you can point the output to another object

Sascha Lefèvre 27-Mar-16 10:12am

;-)
You're welcome!