C#:Getting all image files in folder

Question

I am trying to get all images from folder but ,this folder also include sub folders. like /photos/person1/ and /photos/person2/ .I can get photos in folder like

  path= System.IO.Directory.GetCurrentDirectory() + "/photo/" + groupNO + "/";  public List<String> GetImagesPath(String folderName)     {          DirectoryInfo Folder;         FileInfo[] Images;          Folder = new DirectoryInfo(folderName);         Images = Folder.GetFiles();         List<String> imagesList = new List<String>();          for (int i = 0; i < Images.Length; i++)         {             imagesList.Add(String.Format(@"{0}/{1}", folderName, Images[i].Name));            // Console.WriteLine(String.Format(@"{0}/{1}", folderName, Images[i].Name));         }           return imagesList;     } 

But how can I get all photos in all sub folders? I mean I want to get all photos in /photo/ directory at once.

Answer 1

Have a look at the DirectoryInfo.GetFiles overload that takes a SearchOption argument and pass SearchOption.AllDirectories to get the files including all sub-directories.

Another option is to use Directory.GetFiles which has an overload that takes a SearchOption argument as well:

return Directory.GetFiles(folderName, "*.*", SearchOption.AllDirectories)                 .ToList(); 

Answer 2

I'm using GetFiles wrapped in method like below:

 public static String[] GetFilesFrom(String searchFolder, String[] filters, bool isRecursive)  {     List<String> filesFound = new List<String>();     var searchOption = isRecursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;     foreach (var filter in filters)     {        filesFound.AddRange(Directory.GetFiles(searchFolder, String.Format("*.{0}", filter), searchOption));     }     return filesFound.ToArray();  } 

It's easy to use:

String searchFolder = @"C:\MyFolderWithImages"; var filters = new String[] { "jpg", "jpeg", "png", "gif", "tiff", "bmp", "svg" }; var files = GetFilesFrom(searchFolder, filters, false);