Combining Interlocked.Increment and Interlocked.Exchange

Question

I wish to atomically increment a static variable and simultaneously assign the new value to an instance field in a lock-free manner. The objective is for each object to get a un

Answer 1

You only need to do this:

orderingId = Interlocked.Increment(ref currentOrderingId);

There's no way that two threads could then receive the same value, so it is threadsafe.