CODEWITHSUNDEEP
c#
Lajja Thaker
Lajja Thaker

Reputation: 2041

Search only particular folder in Directory

I need to search particular folder in directory.

I dont want to go for files, no need to search files.

I can search particular folder in directory but for I have to go for loop of files like 

foreach (FileInfo f in dir.EnumerateFiles())
{
      //code
}
foreach (DirectoryInfo d in dir.EnumerateDirectories())
{
   Call function recursively
}

I need to search particular folder only. Because I have so many files around 20,000 , so If I use above code than loop will go all the files, and take more time.

But I need some folders only like 

Regex.IsMatch(dir.FullName, @"1293.*T.*"))

How can i do that without going in files loop.

Upvotes: 1

Views: 2685

Answers (3)

sa_ddam213
sa_ddam213

Reputation: 43636

Your question is very confusing, but do you want to get the directories that match the Regex pattern?

foreach (DirectoryInfo d in dir.EnumerateDirectories().Where(d => Regex.IsMatch(dir.FullName, @"1293.*T.*")))
{

}

Upvotes: 0

e_ne
e_ne

Reputation: 8469

If the search pattern provided by the overload of Directory.GetDirectory isn't strong enough for your needs, you can use a custom method.

static string SearchDirectory(string path, string pattern)
{
    var regex = new Regex(pattern);
    foreach (var d in Directory.GetDirectories(path))
    {
        var dirName = d.Substring(d.LastIndexOf('\\') + 1);
        if (regex.IsMatch(dirName)) return d;
        SearchDirectory(d, pattern);
    }
    return null;
    //Or throw an Exception
}

You might want to surround the foreach loop in a try/catch block.

Upvotes: 2

competent_tech
competent_tech

Reputation: 44971

You can use the System.IO.Directory.GetDirectories overload that accepts a search pattern.

For example:

string[] dirs = Directory.GetDirectories(@"c:\", "c*");

Upvotes: 1

Related Questions