How to modify key in a dictionary in C#

Question

How can I change the value of a number of keys in a dictionary.

I have the following dictionary :

SortedDictionary

        

Answer 1

You need to remove the items and re-add them with their new key. Per MSDN:

Keys must be immutable as long as they are used as keys in the SortedDictionary(TKey, TValue).