我正在创建一个asp.net核心Web应用程序,并且试图为我的数据库上下文创建一个接口,以便在我的业务逻辑层中使用它。界面如下所示:
public interface IAppDbContext
{
public DbSet<Country> Countries { get; set; }
public DbSet<City> Cities { get; set; }
Task<int> SaveChangesAsync(CancellationToken cancellationToken);
}
接口的实现如下:
public class AppDbContext : IdentityDbContext<ApplicationUser, ApplicationRole, string> , IAppDbContext
{
public AppDbContext(DbContextOptions<AppDbContext> options)
: base(options)
{
}
public DbSet<Country> Countries { get; set; }
public DbSet<City> Cities { get; set; }
}
问题是当我注入接口并尝试使用_context.Users
时,它显示以下错误:
'IAppDbContext' does not contain a definition for 'Users' and no accessible extension method 'Users' accepting a first argument of type 'IAppDbContext' could be found (are you missing a using directive or an assembly reference?).
我了解在实现上,_context.Users
来自父类IdentityDbContext
,但是如何将其添加到接口中以便使用呢?谢谢!
答案 0 :(得分:0)
您可以将“用户”添加到您的界面。尝试通过以下方式更新它:
public interface IAppDbContext
{
public DbSet<Country> Countries { get; set; }
public DbSet<City> Cities { get; set; }
DbSet<ApplicationUser> Users { get; set; }
Task<int> SaveChangesAsync(CancellationToken cancellationToken);
}