how to get cpc of a particular keyword in search engine

Ok,
take a look on this, it is written with VB but it can help

http://www.developerfusion.com/code/1893/create-your-own-web-robot/

Thanks for the reply, i have checked this webservice api, but found out two issues

It basically works in php, and i want to use .NET for this purpose, can be a windows application.
Secondly it is not free for business use.

Is there any other way to implement this this thing on our own. I mean by parsing a specific page  or through some third party service that can be easily integrated by .NET.

I see,

Take a look on this link

http://www.wordsfinder.com/

basically i want to make a smaller version of google keyword  tool
https://adwords.google.com/select/KeywordToolExternal

i want to get the cpc and volume with respect to keywords in a website.
Is it possible with some google api or by parsing of page ???

Do you mean search all words with cpc in  a given zone or something else?