Exclude subdirectories in a directory loop

Question

In a .NET code, I have a loop that takes all .wav files from D:\Temp and its subdirectories :

string[] fileHolder = Directory.GetFiles("D:\\Temp","*.wav", SearchOption.AllDirectories);

I want to exclude all .wav files coming from folders that have "blablabla" in their folder name.

How do do this ?

P.S. This is similar to Exclude directories that contain sub directories?, but I haven't been able to use successfully the answers of this topic.

It looks like everything's there in the linked question. What's exactly the problem with applying the answer to what you're trying to achieve? — dtb, Oct 20 '12 at 20:36

Sergey Berezovskiy · Answer 1 · 2012-10-20T21:35:55.873

10

IEnumerable<string> files = 
   from f in Directory.GetFiles("D:\\Temp", "*.wav", SearchOption.AllDirectories)
   where !Path.GetDirectoryName(f).Contains("blablabla")
   select f;

Adding several conditions:

var files = from f in Directory.GetFiles("D:\\Temp", "*.wav", SearchOption.AllDirectories)
            let directoryName = Path.GetDirectoryName(f)
            where !directoryName.Contains("blablabla") &&
                  !direcotyName.Contains("foo")
            select f;

Another solution: (I think that Path.GetDirectoryName is not fastest possible operation)

public static IEnumerable<string> GetFiles(string path, string searchPattern,
                                           Func<string, bool> dirSelector)
{
    if (!dirSelector(path))
        yield break;

    foreach (var file in Directory.GetFiles(path, searchPattern))
        yield return file;

    foreach (var dir in Directory.GetDirectories(path))
        foreach (var file in GetFiles(dir, searchPattern, dirSelector))
            yield return file;
}

Usage:

Func<string, bool> dirSelector = (d) => !d.Contains("blablabla");
string[] files = GetFiles("D:\\Temp", "*.wav", dirSelector).ToArray();

edited Oct 20 '12 at 21:35

answered Oct 20 '12 at 20:39

Sergey Berezovskiy

232,247
41
429
459

Is this in C# (with "var" etc.) sorry I don't know much about C#, .net ? – Basj Oct 20 '12 at 20:59
with this solution, is it also possible to exlcude 3 different words ? exclude blablabla1, exclude blablabla2, exclude blablabla3 : how to code this? – Basj Oct 20 '12 at 21:00
thanks lazyberezovsky ! is "var" possible in C# as well? any idea for multiple exclusions? – Basj Oct 20 '12 at 21:05
After 3 ifs it's better to use `HashSet.Contains(x)` – abatishchev Oct 20 '12 at 21:09
@JosBas `var` is available in C# 3.0 and later – Sergey Berezovskiy Oct 20 '12 at 21:10
@abatishchev also it is possible to create `Func fileSelector` and filter files via `.Where(f => fileSelector(f))` – Sergey Berezovskiy Oct 20 '12 at 21:13
I use SoundForge scripting language that uses .NET 2 I think... It seems that "var" is not possible (because it doesn't work... any idea) – Basj Oct 20 '12 at 21:14
@JosBas in this case `var` will be `IEnumerable`. You can apply `ToArray` to query, if you need `string[]` – Sergey Berezovskiy Oct 20 '12 at 21:28

score 3 · Answer 2 · answered Oct 20 '12 at 20:36

3

Try following:

string[] fileHolder = Directory.GetFiles(@"d:\temp", "*.wav",
         SearchOption.AllDirectories).Where(file => !file.Contains("blabla")).ToArray();

answered Oct 20 '12 at 20:36

Michal Klouda

14,263
7
53
77

+1 but if the searched text is in the filename and not in the folder name, the file will be excluded – Steve Oct 20 '12 at 20:40
I think this query will also filter files, which have `blabla` in their names. – Sergey Berezovskiy Oct 20 '12 at 20:40
you're both right, thanks.. `Path.GetDirectoryName` or `Regex` would be needed then.. depends on situation – Michal Klouda Oct 20 '12 at 20:42
Is this correct then (if I want to filter foldername only) : `string[] fileHolder = Directory.GetFiles(@"d:\temp", "*.wav", SearchOption.AllDirectories).Where(file => !Path.GetDirectoryName(file).Contains("blabla")).ToArray();` – Basj Oct 20 '12 at 20:50
last question : how can I exlcude files, with foldername containing "blablabla1" or "blablabla2" or "blablabla3" (I only have 3 names to exclude) – Basj Oct 20 '12 at 20:55

score 1 · Answer 3 · answered Oct 20 '12 at 20:35

1

You will have to sort them out manually:

List<string> result = new List<string>();
foreach(string filename in Directory.GetFiles("D:\\Temp", "*.wav"))
{
   if (!filename.Contains("blablabla"))
      result.Add(filename);
}

answered Oct 20 '12 at 20:35

Casperah

4,504
1
19
13

this one is nice as well. how to choose among all these solutions ? :) – Basj Oct 20 '12 at 20:53

Exclude subdirectories in a directory loop

3 Answers3