是否可以从实体中持久保存ComplexTypes集合？ [英] Is it possible to persist a collection of ComplexTypes from an Entity?

问题描述

是否可以从实体中保留一组ComplexType？ 

Is it possible to persist a collection of ComplexTypes from an Entity? 

推荐答案

否。将ComplexTypes视为属性组是最容易的。因此，不要说客户有地址第1行属性，地址第2行属性，等等。你可以说客户有一个地址属性，一个地址包含
的第1行，第2行等。当你将它映射到数据库时，所有地址的属性都会被直接注入到客户表格。

No. It's easiest to think of ComplexTypes as property groups. So instead of saying that a Customer has an address line 1 property, address line 2 property, etc. you can just say that a customer has an address property and that an address consists of a line 1, line 2, etc. When you map that to a database, all of the Address's properties get injected directly into the Customer table.

然而，您可以创建一个单独的实体，让您完成您想要做的事情：

You could, however, create a seperate entity that let's you acomplish what you are trying to do:

class Customer
{
  public int Id { get; set; }
  public virtual ICollection<CustomerAddress> Addresses { get; set; }
}

class CustomerAddress
{
  public int Id { get; set; }
  public virtual Address Address { get; set; }

  public int CustomerId { get; set; }
  public virtual Customer Customer { get; set; }
}

[ComplexType]
class Address
{
  public string Line1 { get; set; }
  public string Line2 { get; set; }
  // etc.
}

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