Solution is using javascript
This application is demo application to show developer, how to implement login with Linkedin. It is not using any 3rd part dll and not using any special feature.
pure javascript only.
Javascript SDK for Linked in
https://developer.linkedin.com/docs/js-sdk
first register your application into linkedin for YOUR APP KEY HERE
https://www.linkedin.com/uas/login?session_redirect=https%3A%2F%2Fwww.linkedin.com%2Fdeveloper%2Fapps