尝试在 .NET Core 中更新数据库时出错

Question

I am trying to update a database in .NET Core using the command

dotnet ef database update

but I am getting the following error

Error Number:18456,State:1,Class:14
Login failed for user ''.

I can log in in my SQL Server with this User ID and password so I don´t think the problem is in my connection string

Context

   public class CommanderContext : DbContext
    {
        public CommanderContext(DbContextOptions<CommanderContext> opt) : base(opt)
        {

        }
        public DbSet<Command> Commands { get; set; }
    }
}

appsettings.cs

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "ConnectionStrings": {
    "CommanderConnection": "Server=localhost;Initial Catalog=CommanderDB,User ID=CommanderApi;Password=*****;"
  }
}

Startup.cs

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddRazorPages();
            services.AddDbContext<CommanderContext>(opt => opt.UseSqlServer(Configuration.GetConnectionString("CommanderConnection")));
            services.AddControllers();
            services.AddScoped<ICommanderRepo, MockCommanderRepo>();


        }

I also leave a print of my SQL Server

Answer 1

Your issue is that you've got a comma in the connection string just before User Id.

This needs to be a semicolon:

 "CommanderConnection": "Server=localhost;Initial Catalog=CommanderDB;User ID=CommanderApi;Password=*****;"

Answer 2

"ConnectionStrings": { "CommanderConnection": "Data Source=localhost;Initial Catalog=CommanderDB;User ID=CommanderApi;Password=*****;" }

You can look in the SQL Server errorlog to see what the exact reason for the login failure is. I would guess that either the database name or the password is misspelled.

However, that is not the real error. The real error is that you use sa in the connection string. An application should never log in as sa! An application should either run with the credentials of the actual user, or run under a login with limited permissions