Question

I’m just curious how this works:
In my class Form1.cs I have declared an object static:

 public static Class1 class1;

This is how the constructor of Class1 looks like:

  public Class1()
{
    Form1.class1 = null;
}

I expected to get a null reference exception in MS VS 2010

 class1 = new Class1();
 class1.showMSG();

But instead it just executes showMSG() (showMSG is not static) like I’ve never set the reference to class1 to null.
Any thoughts on this?

Answer 1

Class1’s constructor sets

Form1.class1 = null;

But when you execute

class1 = new Class1();

the assignment to class1 (which is the same class1) happens after the constructor executes. So Form1.class1 now has a value.