static void Main(string[] args)
{
classA ClassA = new classA();
WriteLine($"ClassA.State = {ClassA.State}");
classA.classB ClassB = new classA.classB();
ClassB.setPrivateState(ClassA, 999);
WriteLine($"ClassA.State = {ClassA.State}");
ReadKey();
}
public void setPrivateState(classA target, int newState)
{
target.state = newState;
}