Login with Office365

Hi,

 

you need to register with Office 365 app development portal for that.

 

once you register it will provide you with key and secret code which you can use in your application, and also it will provide you sample code.

 

please read my article part-1 & part-2 here, which mentions this in detail:

 

http://www.c-sharpcorner.com/article/register-your-application-to-work-with-office-365-part-one/