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[英]Entity Framework - Loading specific Navigational Property for members in collection
[英]Entity Framework - Loading only certain rows in navigational property
我有课
Address
PeopleAddress //join table with a column called current
People // my main table, with a IList<PeopleAddress>
modelBuilder.Entity<People>()
.HasMany<PeopleAddress>(m => m.CurrentAddresses)
.WithRequired()
.HasForeignKey(m => m.PeopleId);
我(总是)只希望在PeopleAddress.Current == 1的人中加载PeopleAddress。应用程序不需要使用PeopleAddress.Current == 0的行。 我该如何实现? 这可能吗? 谢谢。
PS:我不能使用Include
因为在很多地方实例化了上下文,我需要在OnModelCreating(DbModelBuilder modelBuilder)
为此,应禁用延迟加载,以完全控制要加载的数据。
在PeopleAddress表上进行查询,并确保通过PeopleAddress中的导航属性也加载了People数据。
public virtual People People { get; set; }
PeopleAddress.Include(pa => pa.People).Where(pa => pa.Current == 1)
试试吧
context.People.Include("PeopleAddress")
.Select(t=> new { t,
PeopleAddress= t.PeopleAddress
.Where(p=>p.Current==1)});
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