Check if list values in dictionary are not empty

Question

I use the following dictionary:

Dictionary<DateTime, List<string>> dictionary

How can I simply check whether one of values -> List of type string is not empty?

Answer 1

Try using Linq:

 Dictionary<DateTime,List<string>> dictionary = ...

 bool hasNotEmptyValues = dictionary
   .Any(pair => pair.Value != null && pair.Value.Any());

Answer 2

You could use Linq as follows.

var HasNonemptyList = dictionary.Values.Any(iList => iList.Count() > 0)