Confirming all Keys in a dictionary have populated Values

Question

I have a Dictionary<string, List<string>>

I want to do a check that all Keys in the dictionary have at least 1 item in its corresponding list

Answer 1

Try the following

bool allPopulated = map.All(p => p.Value != null && p.Value.Count > 0);

Answer 2

You can use the Enumerable.All extension method (part of the LINQ extension methods) for this.

bool allPopulated = yourDictionary.All(p => p.Value != null && p.Value.Count > 0);