获取外键表数据

Question

从dbcontext this.dbcontext.JobDetails.GetAll（）获取数据时。在这里，我还需要来自当前jobDetails的外键表的数据。

public class Like
{
    public int LikeId { get;  set; }
    public JobDetails JobDetails { get; set; }
    [ForeignKey("JobDetailFK")]
    public int JobDetailId { get; set; }
}
public class JobDetails
{
    [Key]
    public int JobDetailId { get; set; }
    public ICollection<Like> Likes { get; set; }
}

Answer 1

在Entity Framework 6中，您可以这样做：

using (DatabaseContext context = new DatabaseContext()) {
    return context.JobDetails.Include(x => x.Likes).ToList();
}

Answer 2

要扩展所提供的答案，您还可以获得多个列表甚至嵌套数据。

List<item> items = db.mainData
    .Where(x => x.parentId == id)
    .Include(x => x.moreData)
            .ThenInclude(acc => acc.field)
    .Include(x => x.evenMoreData)
            .ThenInclude(acc => acc.field)
    .ToList();