Entity Framework Core 2.0 - Add-Migration does not work

Question

I am creating a new code-first project. When trying to create Migration, using the command [Add-Migration Initial -Context LogAuditoriaContext] it simply does nothing, creates nothing, makes no mistake, informs nothing:

I’ve tried mapping with FluentAPI so much on the OnModelCreating() as in separate files, the result is the same.

Looking at the Output Window, it shows:

Build: 0 succeeded, 0 failed, 6 up-to-date, 0 skipped

I am using dot.net core 2.0 and C# 7.2.

---

UPDATE (Solution) With the tips of @Armindo Gomes, I found out that the problem was the connection string, just change the name of LogAuditoria for LogAuditoriaConnection and its references in Startup and LogAuditoriaContext.

Answer 1

Try it this way:

In the archive appsettings.json

"LogAuditoriaConnection": "Server=.\\sqlexpress;Database=LogAuditoria;Trusted_Connection=True;User Id=sa;Password=**********"

In the archive Logauditoriacontext.Cs

public class LogAuditoriaContext : DbContext {

    public LogAuditoriaContext(DbContextOptions<LogAuditoriaContext> options) : base(options) { }

    public DbSet<LogLocation> LogLocation{ get; set; }
    public DbSet<LogRequest> LogRequest { get; set; }
    public DbSet<LogResponse> LogResponse { get; set; }
    public DbSet<Sistema> Sistema { get; set; }

    protected override void OnModelCreating(ModelBuilder builder) {
        base.OnModelCreating(builder);
    }
}

In the archive Startup.Cs

public void ConfigureServices(IServiceCollection services) {
    services.AddDbContext<LogAuditoriaContext>(options => options.UseSqlServer(Configuration.GetConnectionString("LogAuditoriaConnection")));
    // Outros services
    services.AddMvc();
}

On the console of PMC:

add-migration NomeMigration
update-database

Source:

Getting Started with EF Core on ASP.NET Core with a New database