The time when static constructors and static member variables are called.

Class Class1
{
[Stathread]
Static   Void Main ( String [] ARGs)
{
System. Console. writeline (anobject =   Null );
System. Console. writeline ( " ProgramStart " );
}
Static Class1 ()
{
System. Console. writeline ( " Static constructor call " );
}
Static   Readonly   Object Anobject =   New   Object ();
}

One-step debugging concluded that before static constructor initialization, static constructor calls before static methods, and when is static member initialization called? Class Class1
{
[Stathread]
Static   Void Main ( String [] ARGs)
{
System. Console. writeline (anobject =   Null );
System. Console. writeline ( " Program start " );
Class2 C2 =   New Class2 ();
C2.do ();
Class2.staticdo ();

}
Static Class1 ()
{
System. Console. writeline ( " Static constructor call " );
}
Static   Readonly   Object Anobject =   New   Object ();
}

Public class class2
{< br> static class2 ()
{< br> system. console. writeline ( " class2 static constructor " );
}< br> Public class2 ()
{

}
Public   Void Do ()
{
System. Console. writeline ( " Class2 instance. Do () " );
}
Public   Static   Object Something =   New   Object ();

Public Static VoidStaticdo ()
{
System. Console. writeline ("Class2 static method do");
}
}

Trace debugging again. The sequence is as follows: when a class is first mentioned (static object/method is instantiated or called), the class starts to execute static member initialization. If a static constructor exists after initialization, the class calls the static constructor, then perform the corresponding operation.
In what order do multiple static members initialize? Public   Static   Object Something3 =   New   Object ();
Public   Static   Object Something1 =   New   Object ();
Public   Static   Object Something2 =   New   Object ();

Sequence 3-1-2, that is, the compilation Sequence
I don't know if this order will change because of the call. Public   Class Class2
{
Public   Static   Object Something3 = Something1;
Public   Static   Object Something1 =   New   Object ();
Public   Static   Object Something2 =   New   Object ();
}

class class1
{< br> [stathread]
static void main ( string [] ARGs)
{< br> system. console. writeline (class2.something3 = null );
}< BR >}

the result something3 is null, that is, it is not initialized because it is called first.