I tried to use getfiles("*.jpeg) to get all the jpeg files form the dir. its not work

[david prince]

string path = "c:\\jpeg";
            
            long fileSize=0;

            DirectoryInfo dir = new DirectoryInfo(path);

            FileInfo[] fi = dir.GetFiles("*.jpeg");
            
            

            foreach (FileInfo jpegfile in fi)
            {
                fileSize += fi.Length;
               
            }
           
            MessageBox.Show("Size of JPEG file is:" + fileSize);

[Subin Ninan]

Change *.jpeg to *.jpg

[HaLo2FrEeEk]

JPEG-format files are (VERY) rarely saved with an actual .jpeg extension, it's usually the shorter, abbreviated .jpg. Subin's reply is exactly what you need to do, mine is simply to tell you why, so you learn why it didn't work.

[Curtis Rutland]

The best solution is to search for both.

FileInfo[] jpgs = di.GetFiles("*.jpg");
FileInfo[] jpegs = di.GetFiles("*.jpeg");
FileInfo[] allFiles = jpgs.Concat(jpegs).ToArray();