Today ajax is being a common part in most large website and
application.user loves the way everything done without page
refresh and website's with ajax implemented is getting higher
popularity.in the following i showed how to use ajax in asp.net
web page.you can use in php too -

following way a DataTable with data can be used to
populate gridview control in asp.net.following codes get files list
from a file path and adds in DataTable then sets that
DataTable as a DataSource of the GridView grdDirList.

this post will show how to implement image loader in any page.
basically i will show a loading image per image before image
is loaded completely in the page.

following codes shows how to use GridView control.Its a
simple example.

in app main file -

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

asp.net routing is easy to use for rewriting any url.

if you have a url like wwww.aspdotnetsite.com/Projects?user=username.
but if you want to have it in short name for marketing or for anything
you want like this is the resulting url -
wwww.aspdotnetsite.com/Projects/username