How do I get previous key from SortedDictionary?

Question

I have dictionary containing key value pairs.

SortedDictionary dictionary=new SortedDictionary();
dictionary.Add(1,33);
diction         


        

Answer 1

How about this? I havent tested it though, but should give something to start think in this direction. Hope it helps.

        int input = 4;
        List lKeys = dictionary.Keys.ToList();
        int reqIndex = lKeys.IndexOf(input) - 1;
        int reqAnswer = dictionary[reqIndex];

test for other conditions like if (reqIndex != -1) etc..