CODEWITHSUNDEEP
c#filedirectory
Graviton
Graviton

Reputation: 83306

Exclude certain file extensions when getting files from a directory

How to exclude certain file type when getting files from a directory?

I tried 

var files = Directory.GetFiles(jobDir);

But it seems that this function can only choose the file types you want to include, not exclude.

Upvotes: 57

Views: 85437

Answers (9)

Julien Poulin
Julien Poulin

Reputation: 13025

You could try something like this:

var allFiles = Directory.GetFiles(@"C:\Path\", "");
var filesToExclude = Directory.GetFiles(@"C:\Path\", "*.txt");
var wantedFiles = allFiles.Except(filesToExclude);

Upvotes: 14

pask23
pask23

Reputation: 734

I know, this a old request, but about me it's always important.

if you want exlude a list of file extension: (based on https://stackoverflow.com/a/19961761/1970301)

var exts = new[] { ".mp3", ".jpg" };



public IEnumerable<string> FilterFiles(string path, params string[] exts) {
    return
        Directory
        .GetFiles(path)
        .Where(file => !exts.Any(x => file.EndsWith(x, StringComparison.OrdinalIgnoreCase)));
}

Upvotes: 22

Alberto Esteban
Alberto Esteban

Reputation: 1

i used that

Directory.GetFiles(PATH, "*.dll"))

and the PATH is:

public static string _PATH = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);

Upvotes: -2

oscarkuo
oscarkuo

Reputation: 10453

I guess you can use lambda expression

var files = Array.FindAll(Directory.GetFiles(jobDir), x => !x.EndWith(".myext"))

Upvotes: 11

Woolly
Woolly

Reputation: 21

I came across this looking for a method to do this where the exclusion could use the search pattern rules and not just EndWith type logic.

e.g. Search pattern wildcard specifier matches:

  • * (asterisk) Zero or more characters in that position.
  • ? (question mark) Zero or one character in that position.

This could be used for the above as follows. 

string dir = @"C:\Temp";
var items = Directory.GetFiles(dir, "*.*").Except(Directory.GetFiles(dir, "*.xml"));

Or to exclude items that would otherwise be included.

string dir = @"C:\Temp";
var items = Directory.GetFiles(dir, "*.txt").Except(Directory.GetFiles(dir, "*HOLD*.txt"));

Upvotes: 0

mvk
mvk

Reputation: 293

You can try this,

var directoryInfo = new DirectoryInfo("C:\YourPath");
var filesInfo = directoryInfo.GetFiles().Where(x => x.Extension != ".pdb");

Upvotes: 3

M.G.
M.G.

Reputation: 133

This is my version on the answers I read above

List<FileInfo> fileInfoList = ((DirectoryInfo)new DirectoryInfo(myPath)).GetFiles(fileNameOnly + "*").Where(x => !x.Name.EndsWith(".pdf")).ToList<FileInfo>();

Upvotes: 0

okutane
okutane

Reputation: 14270

You should filter these files yourself, you can write something like this:

    var files = Directory.GetFiles(jobDir).Where(name => !name.EndsWith(".xml"));

Upvotes: 110

Biri
Biri

Reputation: 7181

Afaik there is no way to specify the exclude patterns. You have to do it manually, like:

string[] files = Directory.GetFiles(myDir);
foreach(string fileName in files)
{
    DoSomething(fileName);
}

Upvotes: 0

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