EF CTP4中的关系 [英] Relationship in EF CTP4

问题描述

我下载了EntityFramework CTP4，但找不到任何"Relationship（）"在  EntityConfiguration<>。

我在哪里可以找到它？

 

谢谢，

PG

 

解决方案

PG，

 

用于指定关系的流畅API在CTP3和CTP4之间进行了更改。&NBSP;
CTP4 Code First演练解释了这一变化：

 

http://blogs.msdn.com/b /adonet/archive/2010/07/14/ctp4codefirstwalkthrough.aspx

 

这篇文章解释了如何删除Relationship方法，所以不要做这样的事情：

 

builder.Entity< Book>（）。关系（b => b.Author）.IsRequired（）。FromProperty（a => a.Books）;

 

您现在可以执行以下操作：

 

builder。实体< Book>（）。HasRequired（b => b.Author）.WithMany（a => a.Books）;

 

博客文章中有更多详细信息。

 

谢谢，

< span style ="font-family：Calibri"> Arthur

&NBSP;

I downloaded the EntityFramework CTP4 but cannot find any "Relationship()" in  EntityConfiguration<>.

Where can I find it?

 

Thanks,

PG

 

解决方案

PG,

 

The fluent API for specifying relationships was changed between CTP3 and CTP4.  The CTP4 Code First walkthrough explains this change:

 

http://blogs.msdn.com/b/adonet/archive/2010/07/14/ctp4codefirstwalkthrough.aspx

 

This post explains how the Relationship method has been removed, so instead of doing something like this:

 

builder.Entity<Book>().Relationship(b => b.Author).IsRequired().FromProperty(a => a.Books);

 

you would now do something like this:

 

builder.Entity<Book>().HasRequired(b => b.Author).WithMany(a => a.Books);

 

There are more details in the blog post.

 

Thanks,

Arthur

 

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