select random file from directory [duplicate]

Answer 1

As always - there is more than one way to skin a cat. I've built off of tvanfosson (correct) answer, not because this is 'more' correct; but because I think it's a useful approach.

private static string getRandomFile(string path)
{
    try
    {
        var extensions = new string[] { ".png", ".jpg", ".gif" };

        var di = new DirectoryInfo(path);
        return (di.GetFiles("*.*")
                            .Where(f => extensions.Contains(f.Extension
                                                               .ToLower()))
                            .OrderBy(f => Guid.NewGuid())
                            .First()).FullName ;              
    }
    catch { return ""; }
}