I'd like to add Role to new user in asp.net

[centrex]

I've got some txtbox and button . I have AspNetSqlMembershipProvider and when I click the button It all goes to programatic SqlMembershipDatabase Very well . But there is a thing I want to add role to user . I create two roles "Admin" and "editor" . Now I'd like to add role "editor" to all new users . But you know because I didn't use CreateWizard control I don't know where to mention "Roles.AddUserToRole(CreateWizard1.UserName, "editor"). Please guys help me . I need to find it out Thank you .