Dictionary<string, string> dic = new Dictionary<string, string>();
            dic.Add("a","aa");
            dic.Add("b", "bb");
            dic.Add("c", "cc");
            dic.Add("d", "dd");
            foreach (string  key in dic.Keys)
            {
                Console.WriteLine(dic[key]);
            }

------解决方案--------------------
C# code

        Dictionary<string, string> dic = new Dictionary<string, string>();
        dic.Add("a", "aa");
        dic.Add("b", "bb");
        dic.Add("c", "cc");
        dic.Add("d", "dd");
        foreach (KeyValuePair<string, string> pair in dic)
        {
            //,pair.Key键,pair.Value值
            Response.Write(string.Format("{0}={1}<br>",pair.Key,pair.Value));
        }