Why EF7 doesn't have Find method?

DbSet doesn't have a Find method in EF7

Here's a very crude, incomplete, and untested implementation of ....Find()... as an extension method. If nothing else, it should get you pointed in the right direction....The real implementation is tracked by ...#797.......static TEntity Find<TEntity>(this DbSet<TEntity> set, params object[] keyValues) where TEntity : class { var context = ...

How to find a List<Object> using Find method of entity framework passing Array as parameter?

You are looking for a ...Contains... query...:...var lServicosInformados = db.Servicos.Where(x => lCodigoServicos.Contains(x.PKId)); ...This assumes ...PKId... is the name of your primary id column (you didn't specify the name).

Why can't I use ToListAsync() when using a parameter for the predicate in EF7?

FirstOrDefaultAsync... is defined as an extension method for ...IQueryable<T>.......ctx.MyEntities.Where(e => e.Id == 1)... returns ...IQueryable<MyEntity>.......ctx.MyEntities.Where(predicate)... returns ...IEnumerable<MyEntity>..., because you're calling the ...Enumerable.Where... extension method, not the ...Queryable.Where... one....To make it ...

EF7 (Code First) + SQLite doesn't create a database and the tables for the models

In my case the solution to the problem was to create the database and tables through code in the app.xaml, before the app starts....using (var db = new BloggingContext()) { db.Database.EnsureCreated(); db.Database.Migrate(); } ...Context + Model:...public class BloggingContext : DbContext { public DbSet<Blog> Blogs { get; set; } pub...

ASP.NET Core 1.0 EF7 System.Data.SqlClient not found

This is a known issue in RC1 in the way DNX prepares an application for publication. As far as I know, there is no workaround for RC1. This should be fixed in RC2. See ...https://github.com/aspnet/dnx/issues/3316... and ...https://github.com/dotnet/cli/issues/881

How to use injected DbContext in parallel methods in asp.net core and ef7?

I have an Asp.net 5/Core 1 application with EF7. I register the DbContext in the DI container normally....services.AddEntityFramework().AddSqlServer() .AddDbContext<MyDbContext>(options => options.UseSqlServer(connection)); ...Here is a small sample showing what I'm trying to do....public class MyController : Controller { MyDbContext _myDbCon...

What is the difference between the `Has...` and `ForSqlServerHas...` extension methods in EF7 property builder?

I think I've figured this out. In EF Core you are able to use different providers (at this moment SQL Server and SQLite, I believe Azure Tables are coming in the future). Since functionality for these providers are slightly different you are able to specify different behavior for the same property depending on the provider being used. In the true s...

Why is EF7/Core inserting duplicate records?

With many thanks to ...CodeNotFound... who deserves a trophy for......Make sure you're using the same DbContext...So I changed ...AddTransient<,>... to ...AddSingleton<,>... in my services config and hey-presto! IT WORKS!...Also thanks to ...D Stanley... for this useful snippet:...To be fair to those that aren't using DI, another option is to Attac...

SQLite and Entity Framework Core: why include doesn't work?

I think the behaviour is expected. Did you try to invoke ToList on your selection? ...It looks like EF is ignoring include without ToList: ...Entity Framework Core ignoring .Include(..) without .ToList(..) indirectly...var list = myDbContext.People .Include(t => t.OrdersToPeople); .ToList();

Why doesn't EF Core automatically generate id field?

Why are you passing an id to a create action in the first place? You should just have:... [HttpPost] public async Task<IActionResult> Create(VehicleModel newModel) { if (!ModelState.IsValid) return View(newModel); _context.Add(newModel); await _context.SaveChangesAsync(); return RedirectToAct...