Adding service for EF, AddDbContext or AddEntityFramework

EF7 Beta 4 : AddEntityFramework dont accept argument (Configuration)

I am going through this example: ...http://stephenwalther.com/archive/2015/01/17/asp-net-5-and-angularjs-part-4-using-entity-framework-7...and i am struggling with this code part:...using Microsoft.AspNet.Builder; using Microsoft.Framework.DependencyInjection; using Microsoft.Data.Entity; using creaservo.com.Models; using Microsoft.Framework.Config...

AddDbContext was called with configuration, but the context type 'MyContext' only declares a parameterless constructor?

In the following console application (.Net core 2.0), the ...scaffold-dbcontext... created the following ...DbContext...public partial class MyContext : DbContext { public virtual DbSet<Tables> Tables { get; set; } protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) { if (!optionsBuilder.IsConfigured) ...

How to add custom Add-Migration behaviour in EF Core?

My goal is to create a custom ...Attribute... and allow. ...Add-Migration... to have custom code generated based on it....The Model and ...Attribute... class...public class MyAttribute: Attribute {} public class MyModel { public int Id { get; set; } [MyAttribute] public string Name { get; set; } } ...The ...MigrationProvider... and ..

EF Core - adding/updating entity and adding/updating/removing child entities in one request

I am struggling with what seemed to be a couple of basic operations....Let's say I've got a class named Master:...public class Master { public Master() { Children = new List<Child>(); } public int Id { get; set; } public string SomeProperty { get; set; } [ForeignKey("SuperMasterId")] public SuperMaster SuperMas...

EF Core - Added element of relation isnt being saved by EF

I have problem with adding new object's to collection inside user class (relation) one-to-many, one user can have many items...But for some reason context is not saving it properly inside User....Result of this code:...User is added to the _context.UsersTable and can be read from other controllers...Item is added to the _context.ItemsTable (and can...

Why is services.AddDbContext<dbContext>() makes dbContext as a Scoped service?Shoudln't be a Singleton service?

I am using ASP.NET Core 2.2 with Pomelo.EntityFramework.MySql....Here is my code:... services.AddDbContext<dbContext>(options => options.UseMySQL(appConfigsSection["DbConnectionString"])); services.AddSingleton<IUserService, UserService>(); services.AddAuthentication(x => { x.DefaultAuthenticateScheme = JwtBearerDefa...

How to properly configure the `services.AddDbContext` of `ConfigureServices` method

I'm trying to run an .NET Core Web application with EF Core. In order to test the repository I've added an ...MyDbContext... that inherits the EF ...DbContext... and interface ...IMyDbContext.......public interface IMyDbContext { DbSet<MyModel> Models { get; set; } } public class MyDbContext : DbContext, IMyDbContext { public MyDbContext(D...

Issue with Services when attempting to add Context to Startup.cs

I get this error when I attempt to migrate my project:...An error occurred while accessing the Microsoft.Extensions.Hosting services. Continuing without the application service provider. Error: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: AIR.Data.AmaxContext Lifetime: Scoped Implementati...

EF Core Database transation null when using AddDbContext dependency injection

I'm trying to add a context to my servicecollection with:...serviceCollection.AddDbContext<MyContext>(options => options.UseSqlServer("My connection string")); ...a little further I execute a query by getting an instance of the context:...var context = serviceProvider.GetService<MyContext>(); var user = context.Users.FirstOrDefault(u => u.UserName ...

How to add DBContext to services from another assembly

on .net core 2.1, I have loaded the assembly to the application using ...services.AddMvcCore().AddApplicationPart([Assembly]) ...But the assembly contains its DB context , the problem is that I am not able to load the DBContext from the assembly, in a similar way of loading the controllers. Typically we add the DB Context using ...services.AddDbCo...