我应该在构造函数中初始化集合吗 [英] should I initialize collections in the constructor

问题描述

我在 Foo 和 Bar之间有多对多关系

I have a many-to-many relationship between Foo and Bar

这里是简化的Foo

public class Foo
{
    public virtual ICollection<Bar> Bars {get;set;}
}

，我想用附加了一些小节：

and I want to save a new foo with some bars attached:

var foo = new Foo();
foo.Bars.Add(bar1); //I'll get an error that if Bars is not initialized
repo.Insert(foo);
repo.SaveChanges();

我应该在构造函数中初始化Bars，这应该怎么做？
（首先使用EF4 CTP5代码）

should I initialize the Bars in the constructor, is this how it should be done ? (using EF4 CTP5 codefirst)

推荐答案

我确实会在构造函数中初始化集合（如果集合是几乎总是需要），或者会在每次需要该集合时（如果并非总是需要该集合）将getter更改为初始化。

I'd indeed initialize the collection in the constructor (if the collection is virtually always needed), or would change the getter to initialize whenever the collection is first needed (if the collection is not always needed).

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