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

I would prefer to use linq if that's the case... try this it will surely work

SortedDictionary dictionary = new SortedDictionary();
dictionary.add(1, 33);
dictionary.add(2, 20);
dictionary.add(4, 35);

int SelectedKey = 4;

var ResutValue = ( from n in dictionary    
               where n.Key < TheSelectedKey
               select n.Value).Last();

this.txtResult.Text = ResultValue.ToString();