35 SortedList<string,string>cities new SortedList<string,string>(); 36 cities.Add"山东省"，"济南)； cities.Add("河北省"，"石家庄")； 3 cities.Add"江苏省"，"南京)； Console.WriteLine("t键t值")； foreach(string key in cities.Keys Console.WriteLine("\t(o)\t(1)",key,cities [key ]) A2 Console.WriteLine("- 3 for(int i=0;i<cities .Count;i++) Console.WriteLine("t(0)\t(1)",cities .Keys [i],cities .Values []) Console.WriteLine("- " 6 foreach(KeyValuePair<string,string>de in cities Console.WriteLine("\t(o)lt{1)",de.Key ,de.Value ) C:\Windows\system32\cmd.exe 键 有家庄 河北 家庄 12 12