How to delete entries from a dictionary using the value

Question

I have a dictionary collection as bleow:

mydic.addvalue(key1, val1)
mydic.addvalue(key2, val1)
mydic.addvalue(key3, val1)
mydic.addvalue(key4, val2)
mydic.ad         


        

Answer 1

You can also use

var x= (from k in mydic
           where k.Value != val1
           select k).ToDictionary(k=>k.key);

x will not have any of the val1's