Hello, I have created an asp.net core site which I have published on the azure service (it is a login and register page) and in my xamarin cross-platform mobile application I would like to be able to connect and register and that for example the application will check if an account already exists in the database of the site to accept and to register it will register as in the site. I have already created the interfaces but I don't know what code to add in the cs. Thank you for your help