entity-framework-core

I'm trying to build a custom view location system. public class myViewLocationExpander : IViewLocationExpander { private myDBContext _context; public myViewLocationExpander (myDBContext context) { _context = context; } public IEnumerable<string> ExpandViewLocations(ViewLocationExpanderContext context, IEnumerable<string> viewLocations) { _context.Property.//..... //Error happened here Some other codes } And in my startup file public void ConfigureServices(IServiceCollection services) { //other codes services.AddMvc(); services.Configure<RazorViewEngineOptions>(options => { options

I noticed that it is possible to disable tracking in three different ways: via AsNoTracking on context properties via AsNoTracking on the final query before executing it via context.ChangeTracker.QueryTrackingBehavior Is there any difference between these three approaches if I want to disable tracking for everything? If I previously used AsNoTracking after each context property and now I replace it with only a single call on the final query (or disable it via the ChangeTracker ) will it have the same effect? AsNoTracking and AsTracking are extension methods of IQueryable<T> , thus are

EF6 has an overload of DbSet.Include which accepts a string parameter representing a dot-separated list of related objects to return in the query results. It is useful for eager-loading entities in a multi-level object graph. For example: var order = await _dbContext.Orders .Include(o => o.Customer) .Include("OrderDetails.Product") // dot-delimited path .SingleOrDefaultAsync(o => o.OrderId == id); This will return both related order details and populate the Product property of each detail by generating a SQL statement that joins OrderDetail and Product tables. I am looking a way to do this

I am rather new to the .NET Core, and I got a .NET Core WebAPI project MyWebApp, also, i have .Net Core Class Library project MyLib using EntityFrameworkCore When i try to use Add-Migration, i get the error The specified deps.json [...\MyWebApp\bin\Debug\netcoreapp1.1\MyWebApp.deps.json] does not exist Inspecting the folder, I noticed I have this a file in [...\MyWebApp\bin\Debug\netcoreapp1.1\win10-x64\MyWebApp.deps.json] but i really can't figure what i am supposed to do to resolve this. myWebApi project.json: { "dependencies": { "ShopManager": "1.0.0-*", "Microsoft.AspNetCore.StaticFiles":

Models: public partial class Film { public int FilmID { get; set; } public virtual ICollection<Genre> Genres { get; set; } } public class Genre { public int GenreID { get; set; } public virtual ICollection<Film> Films { get; set; } } OnModelCreating using EF6 protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity<Film>() .HasMany(e => e.Genres) .WithMany(e => e.Films) .Map(m => m.ToTable("Genre_Film").MapLeftKey("Films_IdFilm").MapRightKey("Genres_IdGenre")); } I use SQLite. How I can do the same using EF7? The docs for EF7 says how this can be achived: http

Is it somehow possible to define navigation properties in EFCore with private or protected access level to make this kind of code work: class Model { public int Id { get; set; } virtual protected ICollection<ChildModel> childs { get; set; } } You have two options, using type/string inside the model builder. modelBuilder.Entity<Model>(c => c.HasMany(typeof(Model), "childs") .WithOne("parent") .HasForeignKey("elementID"); ); Not 100% sure it works with private properties, but it should. Update: Refactoring-safe version modelBuilder.Entity<Model>(c => c.HasMany(typeof(Model), nameof(Model.childs)

Problem When I try to add a migration to my code, e.g: dnx ef migrations add initial , the env.WebRootPath in Startup(IHostingEnvironment env) is null. This will give me compilation errors when adding a new migration or updating the database. The Code In the Startup.cs class I have these lines in the constructor: public Startup(IHostingEnvironment env) { // ... MyStaticClass.Initialize(env.WebRootPath); // ... _hostingEnvironment = env; } Here env.WebRootPath is null and in the Initialize function this throws an exception. In the ConfigureServices function of the Startup.cs I resolve my class

I am trying to generate a DbContext for an existing database structure using ASP.NET 5 and Entity Framework 7. Not surprisingly, there isn't a lot of documentation surrounding how to do this easily. Additionally, I want to scaffold ONLY the context; there are ~900 tables and I only care about a few of them, I don't need a model class for each one. I've been using the commands specified here and here with little luck. So, I guess I have two questions: Where are the generated context files located? I run the command in the command prompt with no failure, but nothing else happens. I know I'm at