Search string for a list value using linq

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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

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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!

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)[^]