Best way to remove multiple items matching a predicate from a c# Dictionary?

Question

I need to remove multiple items from a Dictionary. A simple way to do that is as follows :

  List keystoremove= new List();
  for         


        

Answer 1

Instead of removing just do the inverse (create a new dictionary from the old one containing only the elements you are interested in) and let the garbage collector take care of the old dictionary:

var newDictionary = oldDictionary.Where(x => x.Value != foo);