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?
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This is discussed in several questions, including [How does static field initialization work in C#? ](stackoverflow.com/questions/710793/…) and [What is the static variable initialization order in C#? ](stackoverflow.com/questions/1405709/…).Matthew Flaschen– Matthew Flaschen2010-10-19 07:09:43 +00:00Commented Oct 19, 2010 at 7:09
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1@Matthew - good links, but with CLI 4 they may be wrong - or rather: not quite as complete; see hereMarc Gravell– Marc Gravell2010-10-19 07:13:43 +00:00Commented Oct 19, 2010 at 7:13
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2 Answers
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.
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.
Jon Skeet has a good write-up on this here
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Static variables comes into picture after the corresponding class loading. It is not after constructor calling, because constructor calling comes into play when we are using new operator to create object of class and static variables are available on class level not on object level.
