Webservice

[beulajo]

Hai,

How Username and password validation is done in Google?.

I need to write a webservice, returning appropriate values to the system that
whether the user have successfullly logged in Google or not

ex: 1 - If user logged in successfully
2 - Invalid Username/password

something like that...How to proceed ?

I need to find out for soundforge.com, google and so on.
First I want to find out for Google site

Thanks in advance,

[tlhintoq]

What have you tried/done/coded so far?
What error(s)/exception(s)/problem(s) is your current code causing?
Can you provide the relevant code segment that is causing the error?

[Curtis Rutland]

Google does provide an API for authenticating users and accessing user data.

http://code.google.com/apis/accounts/

Other sites will vary. There is no "one simple solution" for every site out there. If they do not provide you with an API for authenticating users, you will not be able to do what you want.