什么时候静态变量获得在C＃中初始化？ [英] When do static variables get initialized in C#?

问题描述

我想知道什么时候一个静态变量（一类）进入画面（初始化）？它被称为是第一次或类加载后的实例构造后？
什么时候一个类装载发生的？

I was wondering about when does a static variable(in a class) come into picture(initialized)? Is it after the instance constructor called for the first time or after the class loads? When does a class loading occur?

推荐答案

哦，这是复杂的。这取决于 beforefieldinit 标志是否被设置，这反过来又（在C＃）取决于是否有一个静态构造函数。更糟糕的是;在.NET 4中的我相信的行为改变，使其更加偷懒比它曾经是。

Oh, that is complex. It depends on whether the beforefieldinit flag is set, which in turn (in C#) depends on whether there is a static constructor. And worse; in .NET 4 I believe the behaviour changed to make it more "lazy" than it used to be.

坦率地说，我不会code到这里的任何特定的行为;简单：您尝试使用它们，只要使用普通的code来访问他们之前的静态字段将被初始化

Frankly, I wouldn't code to any specific behaviour here; simply: static fields will be initialized before you try to use them, as long as you use regular code to access them.

乔恩斯基特对这里和<一本一个很好的写了href=\"http://blogs.msmvps.com/jonskeet/2010/01/26/type-initialization-changes-in-net-4-0/\">here

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