本文介绍了如何使用EF Core加载导航属性?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在EF6中,我们有这样的选择:
In EF6 we had such option:
context.Set<TEntity>().Attach(entity);
context.Entry(entity).Collection("NavigationProperty").Load();
由于EF Core 100%严格键入,因此它们删除了收集功能。但是应该用什么代替呢?
Since EF Core "goes 100% strictly typed" they have removed Collection function. But what should be used instead?
添加:
我的意思是如何为ATTACHED实体加载include /导航集合属性?
Added:I mean how to load includes/"navigation collection properties" for ATTACHED entity?
推荐答案
显式加载已在Entity Framework Core v1.1中添加。
请参见
Explicit Loading was added in Entity Framework Core v1.1.See Microsoft Docs
从文档中
using (var context = new BloggingContext())
{
var blog = context.Blogs
.Single(b => b.BlogId == 1);
context.Entry(blog)
.Collection(b => b.Posts)
.Load();
context.Entry(blog)
.Reference(b => b.Owner)
.Load();
}
这篇关于如何使用EF Core加载导航属性?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!