using SMO classes one can backup a sql server database
in .bak extension.It's a programming approach to backup
database.there are other ways but using SMO classes it
is efficient and error free.

stored procedures allow flexibility by offering capabilities like
conditional logic.a single procedure may execute a set of SQL
statements which are really complex.

you will need to access html elements from asp.net
code behind file.i show you how to access widely used
html textarea element from code behind file -

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 -

in php there is a command which is used
to redirect to a page from a page.the following
codes shows hot to achieve this.

System.Net namespace is for dealing with networking.It
is concerned with operations like downloading, uploading
files,making requests by http protocols.