Accessing a Dictionary.Keys Key through a numeric index

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As @Falanwe points out in a comment, doing something like this is incorrect:

int LastCount = mydict.Keys.ElementAt(mydict.Count -1);

You should not depend on the order of keys in a Dictionary. If you need ordering, you should use an OrderedDictionary, as suggested in this answer. The other answers on this page are interesting as well.

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