CODEWITHSUNDEEP
c#
Milly
Milly

Reputation: 17

Searching All Directories with SearchOption.AllDirectories

this is my code below. I've already created a filter that searches for any all image file extensions but when my code runs the SearchOption.AllDirectories appears to be trying to open a particular path instead of searching all my directories.

Anyone help me on where I've gone wrong here? 

string[] filters = { "*.jpg", "*.jpeg", "*.png", "*.gif", "*.bmp" };
var directory = new DirectoryInfo(lblText.Text);
var files = new List<FileInfo>();

foreach (var filter in filters)
{
    var results = directory.GetFiles(filter, SearchOption.AllDirectories);
    files.AddRange(results);
}

Thanks for any help! :)

Upvotes: 0

Views: 11647

Answers (2)

Tim Schmelter
Tim Schmelter

Reputation: 460038

I assume directory is a DirectoryInfo object and you're using this overload of GetFiles. Then a FileInfo[] is returned from the current directory matching the given search pattern and searching all subdirectories.

So the directory-path of the DirectoryInfo is the root directory.

For example:

DirectoryInfo imageDir = new DirectoryInfo(@"c:\Images");
FileInfo[] allJPGImages = imageDir.GetFiles(".jpg",  SearchOption.AllDirectories);

Edit according to your edit.

So the particular path is the Text entered/shown in lblText. Another way to get all files with these extensions:

string[] filters = { "*.jpg", "*.jpeg", "*.png", "*.gif", "*.bmp" };
List<FileInfo> files = filters
    .SelectMany(filter => directory.EnumerateFiles(filter, System.IO.SearchOption.AllDirectories))
    .ToList();

which does not need to load all files into memory until it starts processing. when you are working with many files and directories, EnumerateFiles can be more efficient.

Upvotes: 2

Zath
Zath

Reputation: 557

I am not sure what filter is in your code, but here is a simple example to search a directory.

            string path = "C:\\myFolder1\\myFolder2";
            DirectoryInfo dir = new DirectoryInfo(path);
            FileInfo[] files;               
            files = dir.GetFiles("*.*", SearchOption.AllDirectories);

Maybe your path is wrong? But the AllDirectories options begins at your specified path.

Upvotes: 0

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