问使用Cloudflare CF-IPCountry选择要从中抓取图像的文件夹

EN

public class getimage : IHttpHandler
{
    public void ProcessRequest (HttpContext context)
    {
        // Set a default for images
        string imgdirectory = "/img";

        // check if a directory has been given as a source for images
        if (context.Request.QueryString["d"] != null)
        {
            imgdirectory = context.Request.QueryString["d"];
        }

        // read in all the images into an array
        string[] imgarray = Directory.GetFiles(HttpContext.Current.Server.MapPath(imgdirectory), "*.jpg");

        // generate a radom number upto the total number of images
        Random random = new Random();
        int randomNumber = random.Next(0, imgarray.Length);

        // read in the file
        byte[] imageBytes =File.ReadAllBytes(imgarray[randomNumber]);

        // output the image 
        using (MemoryStream ms = new MemoryStream(imageBytes))
        {
            context.Response.ContentType = "image/jpg";
            ms.WriteTo(context.Response.OutputStream);
        }
    }

    public bool IsReusable {
        get {
            return false;
        }
    }
}