静态变量顺序 [英] Static variable order

问题描述

我对C#中的静态变量声明的顺序有疑问

I have aproblem with the order of static variable declaration in C#

当我运行此代码时:

static class Program {
  private static int v1 = 15;
  private static int v2 = v1;

  static void Main(string[] args) {
   Console.WriteLine("v2 = "+v2);
  }
}

输出为:

v2=15

但是当我像这样更改静态变量声明顺序时:

But when i change the static variable declaration order like this:

 static class Program {
      private static int v2 = v1;
      private static int v1 = 15;


      static void Main(string[] args) {
       Console.WriteLine("v2 = "+v2);
      }
    }

输出为:

v2 = 0

为什么会这样?

推荐答案

以与声明相同的顺序初始化静态字段.当您使用值 v1 初始化 v2 时， v1 尚未初始化，因此其值为0.

The static fields are initialized in the same order as the declarations. When you initialize v2 with the value of v1, v1 is not initialized yet, so its value is 0.

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