How to skip folders with unauthorized access while creating fileinfo list? [duplicate]

Answer 1

static void GetFiles(string dir)
{
    string[] filetypes = new string[] { "3gp", "avi", "dat", "mp4", "wmv", 
                                                     "mov", "mpg", "flv",  }
    foreach(string ft in filetypes)
    {
       foreach (string file in Directory.GetFiles(dir, string.Format("*.{0}", ft),
                                              SearchOption.TopDirectoryOnly)))
       { 
             files.Add(new FileInfo(file));
       }
    }
    foreach (string subDir in Directory.GetDirectories(dir))
    {
        try
        {
            GetFiles(subDir);
        }
        catch
        {
        }
    }
}

Do it using recursion not AllDirectories

run it like GetFiles(dif)