Question

Possible Duplicate:
How do I get the nth element from a Dictionary?

I must get the key name from a dictionary.
How do I get the nth element from a Dictionary? The remedy is not .

Dictionary<string, string> ListDegree= new Dictionary<string,int>();
ListDegree.Add( 'ali', 49);
ListDegree.Add( 'veli', 50);

I want to get the “ali” with index. The following code get the value “324”.What can I do it ?

int i=-1;
foreach (var item in ListDegree)
{
    i++;
}
if (i == -1)
    mf.txtLog.AppendText("Error: \"Code = 1\"");
else
    mf.txtLog.AppendText("Error: \""+ListDegree[ListDegree.Keys.ToList()
        [i]].ToString()+"\"");

Answer 1

public TKey GetNthKeyOf<TKey,TValue>(Dictionary<TKey,TValue> dic, n)
{
    int i = 0;
    foreach(KeyValuePair kv in dic)
    {
       if (i==n) return kv.Key;
       i++;
    }
    throw new IndexOutOfRangeException();
}

*EDIT*

public static class DicExt
{
    public static TKey GetNthKeyOf<TKey,TValue>(this Dictionary<TKey,TValue> dic, n)
    {
        int i = 0;
        foreach(KeyValuePair kv in dic)
        {
           if (i==n) return kv.Key;
           i++;
        }
        throw new IndexOutOfRangeException();
    }
}

*EDIT 2*
As @tomfanning said, Dictionary does not provide guarantees on ordering, so my solution is a fake solution, and doesn’t make sense.