The great control in the asp.net ajax is the update
panel control.it can be added to almost every
asp.net page almost magically.this control when
used with a ScriptManager permits a programmer to
use partial rendering(a technique by which many
sections of page updated partially without reloading
the entire page).

all asp.net handlers implement the interface of IHttpHandler located
in the namespace of System.Web.ISAPI(Internet server application
programming interface) extensions are somehow analogous to Handlers.

it is possible to run Application.Run twice in csharp
application.the following example shows that.it's a
example to create login to access the application.

HttpCookie is a very good way to store small amount of data
in asp.net application/website.you can access cookie value in
any page once set in a page.cookie can stay for long time in the
user's computer.

In wordpress there are some definite ways to add scripts and styles
in your custom plugin.If you don't follow these rules you might
encounter numerous problems specially related with jquery.

Nowadays internet is being part of our life.So you need to
be cautious when you browsing internet.Following are some
guidelines to be safe -