Is a linq query to ConcurrentDictionary Values threadsafe?

Question

let\'s say I have the following code:

ConcurrentDictionary myDict= new ConcurrentDictionary();

Normally

Answer 1

As already mentioned, ConcurrentDictionary.GetEnumerator() does not represent a moment-in-time snapshot of the dictionary. However, ConcurrentDictionary.Values does produce a moment-in-time snapshot.

Therefore the following are not equivalent:

myDict.Any(x => !x.Value.HasPaid)
myDict.Values.Any(x => !x.HasPaid)