it is easier to print part of page.the part of the page
may be under a div or panel.you can achieve this from code
behind file too as per requirement.here i showing only
in page lavel -

It's a very logical requirement to validate user entered email
address before processing anything.in this way you will
never get a invalid email address when you do something
with email address like send email,etc.

if we need some fields from different tables
temporarily in our software or application then

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;

There are many number of joomla template and extension providers in the competition. But some are quiet outstanding.. Here are some of the Joomla Templates and Extensions providers that attracts with best support.

Nowadays soial media like facebook is in almost
all websites.

It's a very common requirement to show hint in textbox when empty
and when textbox gets focus hint goes away.now a days many websites
implemented showing hint.there are many ways to do that by jquery.