InsertOrUpdate>插入确定，更新不起作用

Question

[几天前，我在Entity Framework Core上尝试了AutMapper，现在我想看看InsertOrUpdate（v1.0.1）中的AutoMapper.Collection.EntityFrameworkCore是如何工作的。但是我无法使其正常工作，这是我的测试课程/设置：

DataContext（DbContext）

public class DataContext : DbContext
{
    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseLazyLoadingProxies(false).EnableSensitiveDataLogging(AppHelper.ShowDebugInfos).UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking).UseSqlServer(AppHelper.ConnectionString);
    }

    public DbSet<Contact> Contacts { get; set; } // with some references to other tables
}

启动

services.AddDbContext<DataContext>();

services.AddEntityFrameworkInMemoryDatabase().AddDbContext<DataContext>(); // not sure if we need this for InsertOrUpdate

services.AddAutoMapper(automapper =>
{
    automapper.AddCollectionMappers();
    automapper.UseEntityFrameworkCoreModel<DataContext>(services);
    //automapper.SetGeneratePropertyMaps<GenerateEntityFrameworkCorePrimaryKeyPropertyMaps<DataContext>>(); // exception says we have to use UseEntityFrameworkCoreModel instead of this
}, typeof(DataContext).Assembly);

AutoMapperProfile

public class AutoMapperProfile : Profile
{
    CreateMap<ContactTestDto, Contact>().ReverseMap();

    // did also try:
    //CreateMap<ContactTestDto, Contact>().EqualityComparison((source, destination) => source.Id == destination.Id);
    //CreateMap<Contact, ContactTestDto>().EqualityComparison((source, destination) => source.Id == destination.Id);
}

模型联系人

public partial class Contact
{
    public int Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    // many more (including navigation properties)...
}

Model ContactTestDto

public partial class ContactTestDto
{
    public int Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    // nothing more
}

更新

// this makes no difference:
//Contact contactFromDb = db.Contacts.Find(1); // FirstName is "John"
//db.Entry(contactFromDb).State = EntityState.Modified;

// nothing happens:
db.Contacts.Persist(mapper).InsertOrUpdate(new ContactDto { Id = 1, FirstName = "Updated Name???" });

// insert ok:
db.Contacts.Persist(mapper).InsertOrUpdate(new ContactDto { FirstName = "Inserted Name" });

db.SaveChanges();

我可以在[[both]]中看到Select-Statement（通过SQL Profiler），但是在更新中没有发送更新，插入就可以了。另外，mapper实例工作正常（我可以双向映射）。所以，我错了什么？

PS：为什么我不能写“ Hello SO-Community”？它将被缩减为“社区” oO

几天前，我尝试使用带有实体框架核心的AutMapper，现在我想看看AutoMapper.Collection.EntityFrameworkCore（v1.0.1）中的InsertOrUpdate如何工作。但我无法将其提升到...

Answer 1

您已在数据库选项（.UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking)）中禁用了跟踪，因此您需要通过选项将其启用，或针对诸如此类的请求启用它：