entity-framework-core

I'm using the in memory database provider for integration tests however I don't seem to be able to update a record. I've run the same code against a real SQL database and everything gets updated fine. Here is my test fixture code. Test Fixture: public class TestFixture<TStartup> : IDisposable { private readonly TestServer _testServer; public HttpClient TestClient { get; } public IDatabaseService DbContext { get { return _testServer.Host.Services.GetService<DatabaseService>(); } } public TestFixture() : this(Path.Combine("src")) { } protected TestFixture(string relativeTargetProjectPatentDir) {

I have problem with inserting data to database table which has foreign keys. As error I'm getting Cannot insert explicit value for identity column in table 'MachineTypes' when IDENTITY_INSERT is set to OFF.Cannot insert explicit value for identity column in table 'SpareTypes' when IDENTITY_INSERT is set to OFF. BaseEntity.cs public abstract class BaseEntity { [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] public Int64 Id { get; set; } public DateTime CreateDate { get; set; } } MachineType.cs public class MachineType : BaseEntity { [Required] [StringLength(50)] public string

I am getting a NullReferenceException on a project recently converted to dotnet core 2.1. My EF library project is dotnet core 2.1. Code first migrations. CsvHelper 6.0.2 Microsoft.EntityFrameworkCore 2.1.0 Microsoft.EntityFrameworkCore.Design 2.1.0 Microsoft.EntityFrameworkCore.SqlServer 2.1.0 Microsoft.EntityFrameworkCore.Tools 2.1.0 Output from the add-migration command PM> add-migration -Name MyMigration -Context EscData01Context -Project Data\EscData01 -StartupProject PacmsTri -verbose Using project 'Data\EscData01'. Using startup project 'PacmsTri'. Build started... Build succeeded. C:

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 _myDbContext; public MyController(MyDbContext myDbContext) { _myDbContext = myDbContext; } public IActionResult Index() { //Just start these and don't wait for them to finish //We don't care if they succeed or not Task.Run(() => DoSomeLogging1()); Task.Run(() =>

I am having issues with the lazy loading. I have the following dbcontext. public virtual DbSet<AccountGroupMst> AccountGroupMst {get; set;} I have enabled the lazy loading. services.AddDbContext<DBContext>(x => x.UseSqlServer(Configuration.GetConnectionString("Test")) .UseLazyLoadingProxies()); Model, I have virtual and it is a self referencing table. public class AccountGroupMst { [Key] [Required] public int AccountGroupId { get; set; } [MaxLength(255)] [StringLength(255)] [Required] public string AccountGroupName { get; set; } [ForeignKey("ParentAccountGroupId")] public int?

Given these classes: public class A { public int Id {get; set;} public int? BId {get; set;} public B B {get; set;} } public class B { public int Id {get; set;} public int? AId {get; set;} public A A {get; set;} } Then with Fluent API modelBuilder.Entity<A>() .HasOne(a => a.B) .WithOne(b => b.A) .HasForeignKey<A>(a => a.BId); When creating objects and add them to database, things look like following in the corresponding tables: [A].BId is set [B].AId = null When I retrieve data using EF Core: A.B is set, A.BId is set B.A is set, but B.AId is null . What should I do to have B.AId set as well?

The context is each Car has a corresponding CarBrand . Now my classes are as shown below: public class Car { public int CarId { get; set; } public int CarBrandId { get; set; } public CarBrand CarBrand { get; set; } } public class CarBrand { public int CarBrandId { get; set; } public string Name { get; set; } } public class MyContext : DbContext { public DbSet<Car> Cars { get; set; } public DbSet<CarBrand> CarBrands { get; set; } protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) { optionsBuilder.UseSqlite(@"Data Source = MyDatabase.sqlite"); } } Here's a sample

I have a simple problem with data binding. I'm not able to get the datagrid DeviceDataGrid to visualise the entity information. The MainWindow.xaml file is as follows: <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:domain="clr-namespace:FxEditorDatabaseStructure.Core.Domain" mc:Ignorable="d" x:Class="FxEditorDatabaseStructure.MainWindow" Title="MainWindow" Height="350" Width=