静态构造器和静态属性的执行顺序

class A
 {
  
  static A()
  {
   X=B.Y+1;                                       ---------------third
  }
  public static int X=0;                         ---------------second

  
 }
 class B
 {
     static B(){}                                      -------------------fourth
     public static int Y=A.X+1;                -------------------first
  
  static void Main()
  {
   Console.WriteLine("X={0}" ,A.X);
   Console.WriteLine("y={0} ", B.Y);

  }
 
 }

结果为 1,2
执行顺序为:先执行入口函数所在类的静态属性!,然后执行静态构造器.