Question

Basically I have some code to check a specific directory to see if an image is there and if so I want to assign a URL to the image to an ImageControl.

if (System.IO.Directory.Exists(photosLocation)) {     string[] files = System.IO.Directory.GetFiles(photosLocation, '*.jpg');     if (files.Length > 0)     {         // TODO: return the url of the first file found;     } } 

Answer 1

As far as I know, there’s no method to do what you want; at least not directly. I’d store the photosLocation as a path relative to the application; for example: '~/Images/'. This way, you could use MapPath to get the physical location, and ResolveUrl to get the URL (with a bit of help from System.IO.Path):

string photosLocationPath = HttpContext.Current.Server.MapPath(photosLocation); if (Directory.Exists(photosLocationPath)) {     string[] files = Directory.GetFiles(photosLocationPath, '*.jpg');     if (files.Length > 0)     {         string filenameRelative = photosLocation +  Path.GetFilename(files[0])            return Page.ResolveUrl(filenameRelative);     } }