CODEWITHSUNDEEP
c#arraysstringsearch
user1034489
user1034489

Reputation: 37

How to check if a string contains any of the elements in an string array?

I'm trying to implement a simple search function. I have a string array which contains all words which was typed in from the user to search. And I have another string which contains data like User Name, content... So what I want to do is to check is Name contains any of the elements in the search or String array. Right now I have a loop which checks one word at a time and concatenates the result in an IEnumerable.

Does anyone know a faster way of doing this search? Like String.ContainsAny(Search[])

Upvotes: 3

Views: 7304

Answers (5)

MNIK
MNIK

Reputation: 1619

Try this:

Search.Any(p => name.Contains(p))

Upvotes: 8

Ali Safari
Ali Safari

Reputation: 1775

Two solutions to this problem for example:

  1. Solution 1

    private void findDateColumn()   {
        string stringToCheck = "date";
        int stringToCheckIndex = -1;
        string elementInArray = "Not Defined or Not Found";
        if (Array.Exists<string> (headers, (Predicate<string>) delegate (string s)
        {
        stringToCheckIndex = s.IndexOf (stringToCheck,StringComparison.OrdinalIgnoreCase);
        elementInArray = s;
        return stringToCheckIndex > -1;
        }))
        {
        dateColTitle.Text = elementInArray; //a textbox to show the output
        }
}

  2. Solution 2

I'm using @Lev answer, which seems simpler and shorter plus giving the same result:

    private void setDateColumnTitle ()
{

dateColTitle.Text = "Not Defined or Not Found";

var match = headers.FirstOrDefault(c => c.IndexOf("date", StringComparison.OrdinalIgnoreCase) > -1);

if (match!=null)                
    dateColTitle.Text = match;               
}

Upvotes: 0

sll
sll

Reputation: 62504

using System.Linq;

string[] searchItems = ...
string input = "This is the input text";

// Check whether at least one match found
bool matchFound = input.Any(w => input.Contains(w));

// Count all matches
int matchesCount = input.Where(w => input.Contains(w))
                        .Count();

Upvotes: 2

Glory Raj
Glory Raj

Reputation: 17701

you can do like this...

return array.Any(s => s.Equals(myString))

or try like this....

 string stringToCheck = "text1";
        string[] stringArray = { "text1", "testtest", "test1test2", "test2text1" };
        foreach (string x in stringArray)
        {
            if (x.Contains(stringToCheck))
            {
                // Process...
            }

        }

or Something like this 

string stringToCheck = "text1text2text3";
string[] stringArray = new string[] { "text1" };
if (Array.Exists<string>(stringArray, (Predicate<string>)delegate(string s) { 
    return stringToCheck.IndexOf(s, StringComparison.OrdinalIgnoreCase) > -1; })) {
    Console.WriteLine("Found!");
}

Upvotes: 1

ckoo
ckoo

Reputation: 229

string[] searchItems = ...;
string[] userNames = ...;

var matches = userNames.Intersect(searchItems);

You can find more about the intersect method here

Upvotes: 1

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