Question

I have a handler (c#/asp.net) that pulls images from a database.
The current format looks like foo.com/_image.ashx?querystring1&querystring2
The querystring keys are things like id, width, zoom level etc.

I can either munge this up into a filename (i.e. foo.com/id__999_w__128__h__200.jpg), or a whole url structure (i.e. foo.com/id/999/w/128/h/200/image.jpg).

Im interested to see what other people would do given this situation, as there dont seem to be any articles or discussions of this practice on the net.

Answer 1

The easiest solution would be to base64 the filename, then you can pretty much guarantee the filename will be correct each time, and not tampered with or broken.

string filename = @"C:\images\myimage.png";

// You may need to change the Encoding type here
string converted = Convert.ToBase64String(
    System.Text.Encoding.Default.GetBytes(filename));