搜索所有文件夹和子文件夹

Question

I need to search on all folders and subfolders to find image files. My problem is that I can not search on a network dir and with this code, it only find onde folder and not all folders and subfolders. Any help? Thank you. What I have:

private void Worker_DoWork(object sender, DoWorkEventArgs e)
{
    List<string> filesList = new List<string>();
    // Create the new DataTable to be used
    tableWithPhotos = new DataTable();
    tableWithPhotos.Columns.Add("Nome e formato do ficheiro (duplo clique para visualizar a imagem)");
    tableWithPhotos.Columns.Add("Caminho ( pode ser copiado Ctrl+C )");
    var diretorios = new List<string>() {@"C:\Users\myfolder\pictures"};
    var extensoes = new List<string>() { "*.jpg", "*.bmp", "*.png", "*.tiff", "*.gif" };
    foreach (string entryExtensions in extensoes)
    {
        foreach (string entryDirectory in diretorios)
        {
        filesList.AddRange(Directory.GetFiles(entryDirectory, entryExtensions, SearchOption.TopDirectoryOnly));
        }
    }

Answer 1

Your immediate problem is you're specifying TopDirectoryOnly for SearchOptions . It should be AllDirectories .

filesList.AddRange(Directory.GetFiles(entryDirectory, entryExtensions, SearchOption.AllDirectories));

To add to the answer, I think you can simplify the process. Creating a list of strings with one directory doesn't make sense. I'm talking about this line:

var diretorios = new List<string>() {@"C:\Users\myfolder\pictures"};

Instead, do something like this:

var topDir = @"C:\Users\myfolder\pictures";
var extensoes = new List<string>() { "*.jpg", "*.bmp", "*.png", "*.tiff", "*.gif" };
foreach (string ext in extensoes)
{
    var files = Directory.EnumerateFiles(topDir, ext, SearchOption.AllDirectories);
    // Add to list.
}

I encourage the use of EnumerateFiles() instead of GetFiles() as it's faster especially if you have a large number if files. See this answer.

Answer 2

这是我需要做的：

 filesList.AddRange(Directory.EnumerateFiles(allDir, ext, SearchOption.AllDirectories));