At the moment, I use C# to fetch contacts list from Yahoo and successfully
But I have a problem at step 2 when set permission for a user to fetch contatcs via url
https://api.login.yahoo.com/oauth/v2/request_auth is to redirect url to login yahoo page
I try use some other way in C# to pass param(user+pass of user) to login auto via this url but no success at step set permission get contacts
The question is Could i do step request_auth via not browers?
Thanks much for any reply or suggestion