Displaying random image from an array of images in ASP.NET using C#...

Hi,

I have the following code that I'm trying to display an image randomly selected from a list of images in an array, but it doesn't seem to work.  Please help!

Very much appreciated.

<asp:Image ID="imgRandom" runat="server" Height="50px" Width="50px" />
 
    protected void Page_Load(object sender, EventArgs e)
    {
        string imageDir = "images_random/";
        string physicalPath = Server.MapPath("/images_random");
        string[] filePath = Directory.GetFiles(physicalPath, "*.gif"); // i know all my images are gifs
        DirectoryInfo dirInfo = new DirectoryInfo(physicalPath);
        FileInfo[] imageFiles = dirInfo.GetFiles();
        string listFiles = "";
        int i = 0;
        foreach (FileInfo file in imageFiles)
        {
            i++;
            listFiles += imageDir + file.Name;
            if (i < imageFiles.Length)
                listFiles += ",";
        }
        string path = Request.ApplicationPath + GetRandomImage(listFiles);
        imgRandom.ImageUrl = path; // display the random image
    }
    protected string GetRandomImage(string files)
    {
        Random r = new Random();
        string[] images = new string[] { files }; // this "files" variable should spit out the same list of images as those in the next commented line. If I comment out this line, and uncomment the next line, it works.
        //string[] images = new string[] { "images_random/someimage1002007.gif", "images_random/someimage-2008.gif", "images_random/someimage-2007.gif", "images_random/someimage-1987.gif", "images_random/someimage-1995.gif", "images_random/someimage-2001.gif", "images_random/someimage-2004.gif", "images_random/someimage-2006.gif" };
        return images[r.Next(0, images.Length)]; // this line works
}

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