Error trying to register in C#

Question

I am creating a program and I need the user to register to log in. When running the program, when I try to register this error appears in Visual Studio: "The model backing the 'Banco' context has changed Since the database was created." This error points this part of the code in the first line (User ...):

public bool Login(String login, String senha)
    {
        Usuario usuario = this.banco.Usuarios.Where(user => user.Email.Equals(login) && user.Senha.Equals(senha)).FirstOrDefault();

        Gerenciador.usuarioLogado = usuario;

        return (usuario != null);
    }

Here is the beginning of the code:

public class Gerenciador
{

    public static Usuario usuarioLogado;

    private Banco banco = new Banco();
 (...)

Please help me. I need to deliver this program this week and I can’t even log into the program :x

Thank you in advance!

Answer 1

Try adding this code snippet in your class that represents the context of the database application:

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
     Database.SetInitializer<NomeDoSeuContexto>(null);
     base.OnModelCreating(modelBuilder);
}