实体框架6:禁用延迟加载，特别是加载包含的表 [英] Entity Framework 6: Disable Lazy Loading and specifically load included tables

问题描述

默认情况下，我们当前的系统使用的是延迟加载(这是我要禁用的功能，但目前无法完成)

Our current system is using Lazyloading by default (it is something I am going to be disabling but it can't be done right now)

对于这个基本查询，我想返回两个表CustomerNote和Note.

For this basic query I want to return two tables, CustomerNote and Note.

这是我的查询

            using (var newContext = new Entities(true))
            {
                newContext.Configuration.LazyLoadingEnabled = false;


                var result = from customerNotes in newContext.CustomerNotes.Include(d=>d.Note)
                             join note in newContext.Notes
                                on customerNotes.NoteId equals note.Id
                             where customerNotes.CustomerId == customerId
                             select customerNotes;

                return result.ToList();
            }

但是我的结果仅包含CustomerNote表中的数据

My result however only contains the data in the CustomerNote table

链接的实体Customer和Note都为空，这里我在做什么错了?

The linked entities Customer and Note are both null, what am I doing wrong here?

我将其与以下内容一起使用，这比我在其他地方找到的要简单得多

I got it working with the following which is much simpler than what I've found elsewhere

            Context.Configuration.LazyLoadingEnabled = false;
            var result = Context.CustomerNotes.Where<CustomerNote>(d => d.CustomerId == customerId)
                .Include(d=>d.Note)
                .Include(d=>d.Note.User);
            return result.ToList();

这会从便笺中返回我的CustomerNote表，相关便笺和相关用户.

This returns my CustomerNote table, related Notes and related Users from the Notes.

推荐答案

这就是您想要实现的渴望加载.

That is callled eager loading you want to achieve.

var customerNotes = newContext.CustomerNotes.Include(t=> t.Node).ToList();

这应该有效，我不太了解关键字语法. 如果上面的代码不起作用，请尝试以下操作:

This should work, i don't really understand the keyword syntax. If the code above doesn't work try this:

        var customerNotes = newContext.CustomerNotes.Include(t=> t.Node).Select(t=> new {
        Node = t.Node,
        Item = t
    }).ToList();

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