Directory.GetFiles Path Issue

Question

I Have always used Confid.VirtualDir for my paths. For example:

Config.VirtualDir + "upload/gallery/image.jpg"

This gives me the path of /upload/gallery/image.jpg . which works totally fine in every page for example:

<img style="height: 100px; " src="<%=Config.VirtualDir + "upload/gallery/image.jpg" %>" />

works perfectly fine.

BUT now I have problem with Directory.GetFiles .

It works on:

protected string[] images;
images = Directory.GetFiles(@"C:\website\mysite.com\upload\gallery", "*.jpg");

But not with:

protected string[] images;
string path = Config.VirtualDir + "upload/gallery";
images = Directory.GetFiles(path,"*.jpg");

I don't see any errors in console.

I also tried "upload\\gallery" but i get error "Unrecognize escape sequence".

Using @"C:\\website\\mysite.com\\upload\\gallery" , will expose directory structure of my server, which I'd rather to avoid.

UPDATE : Based on Alex K. advice. I tried:

protected string[] images;
protected string realImage;
    string path = Server.MapPath(@"~\upload\Gallery");
    images = Directory.GetFiles(path, "*.jpg");
    realImage = Path.Combine(Server.MapPath(@"~\upload\Gallery"), Config.VirtualDir + "upload/Gallery");

Now I'm Confused how to use path to GetFiles and realImage path to get my images.

UPDATE2 : Got it to work. Thanks Alex K . I Answer below

Answer 1

Description in comments:

Code File:

       public List<string> images = new List<string>();
        protected string realPath;
        protected void Page_Load(object sender, EventArgs e)
        {
            string path = Server.MapPath(@"~\upload\Gallery"); 
            // this gets the actual directory path.
            realPath = Path.Combine(path, Config.VirtualDir + "upload/Gallery/");
            //this changes the path to the VirtualDir path
            DirectoryInfo di = new DirectoryInfo(path);
            //this gets file names in the folder
            foreach(var fi in di.GetFiles())
            {
                images.Add(fi.Name);
                //adds file names to images list
            }
        }

HTML:

    <img style="height: 100px; " src="<%=realPath + images[0]%>" />
    //any images[i] is accessible