title: Asp.net c# How to update Onesignal tags on asp.net page?
body: <p>I'm new to Onesignal.com push notifications, I manage to add it to my asp.net site,my problem is does anyone knows if and how I can change the user tags with the Api, for register user.
  One more, now I add the javascript code and when user comes to my page he can register throw the popup modal, I want to know if there is a way to register with a button click event with the api</p>
  
  <p>I'll be thankful for c# code example</p>
  
  <p>Thanks in advance</p>