CODEWITHSUNDEEP
c#linq
John
John

Reputation: 175

multiple || after where

I am trying to have multiple ||'s after my where clause based on the amount of strings in an array.

string[] searchStrings = new string[]{"test", "tester", "test3"};

var files = Directory.EnumerateFiles("FolderPath", "*.*", SearchOption.AllDirectories)
                     .Where(s => s.Contains(searchStrings[0]) || s.Contains(searchStrings[1]));

What it should do is search a folder for files, and if the file name contains each of the keywords from the array then it is put in files. Currently I can hardcode how many searches by adding more ||'s but I am wondering is there a way to do this automatically based on the size of the searchStrings array.

Upvotes: 0

Views: 73

Answers (2)

Adassko
Adassko

Reputation: 5343

You can also use regular expression for this purpose

Regex searchPattern = new Regex("test|tester|test3"); // "test(3|er)?"

var files = Directory.EnumerateFiles("FolderPath", "*.*", SearchOption.AllDirectories)
                 .Where(s => searchPattern.IsMatch(s));

You can compose your pattern using:

string.Join("|", searchStrings);

I think regular expressions after precompiling may be even faster in some cases and gives you a lot more of flexibility

Upvotes: 0

Anatolii Gabuza
Anatolii Gabuza

Reputation: 6260

You can use .Any() for instance:

.Where(dir => searchStrings.Any(s => dir.Contains(s)));

It will allow to get needed result by checking if directory name contains at least one searchString from searchStrings collection.

Upvotes: 6

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