“由于StackOverflowException，进程正在终止”，原因在以下代码中

Question

一个类本身包含它自己实例化的对象，当在c#的main方法中创建该类的对象时，它会给出stackoverflowExeption。为什么？?我想要它的原因，而不是solution.Thanks

namespace project_1
{
class check
{
    check checkobject = new check();// Line-1

    /*I have not access Line-1 in main method.
     But due to Line-1 or Line-2, output says "Process is terminating due to StackOverflowException". Why??
     I do not need the solution, I want to know the reason for it.
     Removing " new check() " from Line-1, then it works fine.
     */
    public void Display() {
        Console.WriteLine("It worked");
    }
}
class DemoProgram
{
    static void Main(string[] args)
    {
        check ob1 = new check();// Line-2
        ob1.Display();
    }
}
}

Answer 1

这是因为当您从main方法创建新的check对象时，它会触发实例变量checkobject的初始化，这将再次创建check类的对象。这是一个无限的过程，因此分配给您的程序的内存已耗尽。

Answer 2

每次初始化类时，都会调用类的构造函数。标记为行1的行是您不应该拥有的行。这意味着你可以递归地调用你的构造函数。

Answer 3

如果您尝试您的程序，您将看到与以下类似的输出。如果您几乎不知道为什么会发生这种情况，那么至少您可以根据构造函数来猜测出了什么问题。

Compilation succeeded - 1 warning(s)

jdoodle.cs(5,11): warning CS0414: The private field `check.checkobject' is assigned 
                  but its value is never used


Stack overflow: IP: 0x5647646e1705, fault addr: 0x7fffc422eff8
Stacktrace:
  at <unknown> <0xffffffff>
  at (wrapper alloc) object.AllocSmall (intptr,intptr) <0x00103>
  <...>
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0
  ........
  ........
  ........
  ........
  ........
  at check..ctor () [0x00000] in <db1fd2bd96e041fab014c4ec28898e03>:0

  output Limit reached.