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

If you want to show DataList control's each item's
details when clicked in the 'details' link then
there is a easy way to do that is to use
CollapsiblePanelExtender.

List<> can be used as a collection of objects which
can be accessed by index.List originated from
System.Collections.Generic class.List objects can
be sorted,searched,manipulated.so List is very
useful in programming for holding any type of
objects.following shows a example of List<> -

if you want to read get/read data from a file according to
querystring using StreamReader then following codes will
help you.It is very useful in some case.here i get data from
a ashx file according to query string i pass to the file -