Circular references!

What is circular reference?

For example, it is easier to describe this problem:

Class Program
{
Static void main (string [] ARGs)
{
B = new B ();
}
}
Public Class
{
Public B = new B ();
}

Public Class B
{
Public A = new ();

}

Field a References field B and field B References field A, which leads to the issue of circular reference. Unfortunately, the C # compiler cannot detect such problems!

IfCodeIf this is the case, a new object will be allocated continuously in the heap, and an stackoverflowexception exception will be thrown.

Of course, this is not what everyone writes, because it is obvious that circular references exist here.

but sometimes this problem is relatively obscure. It may be that a references B, B references C, C references D, and D References, this problem eventually occurs. Write This article to attract your attention.