Brother, thanking you for your quick reply, I already seen those APIs
But tell me if I received 0.0012 BTC then how could I come to know that I received $???.

Hello,
I'm using blockchain api to receive payment using my web app.  When user makes payment I got response on callback url but I received the value in satoshi and if I divided it with 10000000.. then it converts it to btc.
The question is how to convert that btc to usd.?  Is there any api for that or any calculations?
Please help

Hi, as subject says I have to send/receive bitcoin from my asp.net web application.  I tried Blockchain but it didn't generates api keys (I don't know why).
So kindly tell me the best option to send/receive bitcoin using api in asp.net