C#中Dictionary几种遍历的实现代码

代码如下: Dictionary<string> list=new Dictionary<string>;//3.0以上版本foreach(var item in list){      Console.WriteLine(item.Key+item.Value);}//KeyValuePair<T>foreach(KeyValuePair<string> kv in list){      Console.WriteLine(kv.Key+kv.Value);}//通过键的集合取foreach(string key in list.Keys){