How to create user with Membership class and database will be created automatically ASP.NET C#

MembershipCreateStatus status;

            var user = Membership.CreateUser("12", "1212*&*", null, "What", "test", true, out status);

            Response.Write(status);

references:- https://www.c-sharpcorner.com/UploadFile/fa9d0d/how-to-create-user-in-Asp-Net-membership521/