如何使用 EF Core 删除数据库中的多条记录？

Question

我想根据AdvertId里面的来删除，而不是根据ID来删除。我找到了AdvertId，但我卡在删除上。我正在使用 CQRS 结构。我的文件夹Repository和IRepository文件夹是分开的。在控制器部分，我通过查找advertId.

public class Advert_CategoryPropertyDetailJunctionDeleteHandler : 
        IRequestHandler<Advert_CategoryPropertyDetailJunctionDelete, ApiResponse>
{
    private readonly IUnitOfWork _repo;

    public Advert_CategoryPropertyDetailJunctionDeleteHandler(IUnitOfWork repo)
    {
        _repo = repo;
    }

    public async Task<ApiResponse> Handle(Advert_CategoryPropertyDetailJunctionDelete 
    request, CancellationToken cancellationToken)
    {
        var mapped = await 
        _repo.AdvertCategoryPropertyDetailJunctions.GetAllAsync(request.predicate);

        if (mapped == null)
            return new ErrorApiResponse(ResultMessage.NotDeletedUser);

        await _repo.AdvertCategoryPropertyDetailJunctions.DeleteAllAsync((Advert_CategoryPropertyDetailJunction) mapped);

        return new SuccessApiResponse();
    }
}

红外存储库：

Task<IEnumerable> DeleteAllAsync(T entity);

存储库；

public async Task<IEnumerable> DeleteAllAsync(T entity)
{
    Context.Set<T>().Remove(entity);
    Context.Entry(entity).State = EntityState.Deleted;
    await Context.SaveChangesAsync();
    return (IEnumerable)entity;
}

Answer 1

此功能在此处描述的 EF7 中引入。

它看起来像：

await context.Customers
    .Where(x => x.AdvertId == advertIdToDelete)
    .ExecuteDeleteAsync();