A CAPTCHA is a program which tells whether its user
is human or computers.

follow the steps below to add captcha in your web form
easily -

Facebook access token is needed whenever you access
facebook stream of page or profile, Graph api call to post
to facebook.there are many ways by which you can generate
access token.By the following way you can create short lived
access token for a user as well as extend it to long lived
token -

There is a big difference in creating array of
objects in c# from c++,java.creating an array
of objects involves two step.

in windows invironment,the file system is splited into directories
and files.files holds the actual data,but directories are
storage for logical listing of files in the system.to deal with
files and folders(directories),CLR uses System.IO namespace.
the classes used are File,FileInfo,DirectoryInfo,Directory.

I wanted paging for showing datalist items in pages.for
that i used pageddatasource.it's necessary very much.
following codes show how to add paging for datalist items -

if you wanted to use jquery like for showing/hiding panel
when button clicked inside datalist itemtemplate then you
experienced that the action is repeated per item.