static void Main(string[] args)
{
MyThreadObject a = new MyThreadObject();
Thread t = new Thread(ChangeState);
t.Start(a);
new Thread(ChangeState).Start(a);
Console.ReadKey();
}
static void ChangeState(object o)
{
MyThreadObject m = o as MyThreadObject;
while (true)
{
lock (m)
{
m.ChangeState();
}
}
}