//定义Dictionary<string, string> openWith = new Dictionary<string, string>();

    //添加元素openWith.Add("txt", "notepad.exe");openWith.Add("bmp", "paint.exe");openWith.Add("dib", "paint.exe");openWith.Add("rtf", "wordpad.exe");

    //取值Console.WriteLine("For key = \"rtf\", value = {0}.", openWith["rtf"]);

    //更改值openWith["rtf"] = "winword.exe";Console.WriteLine("For key = \"rtf\", value = {0}.", openWith["rtf"]);

    //遍历keyforeach (string key in openWith.Keys){Console.WriteLine("Key = {0}", key);}

    //遍历valueforeach (string value in openWith.Values){Console.WriteLine("value = {0}", value);}//遍历value, Second MethodDictionary<string, string>.ValueCollection valueColl = openWith.Values;foreach (string s in valueColl){Console.WriteLine("Second Method, Value = {0}", s);}

    //遍历字典foreach (KeyValuePair<string, string> kvp in openWith){Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value);}

    //添加存在的元素try{openWith.Add("txt", "winword.exe");}catch (ArgumentException){Console.WriteLine("An element with Key = \"txt\" already exists.");}

    //删除元素openWith.Remove("doc");if (!openWith.ContainsKey("doc")){Console.WriteLine("Key \"doc\" is not found.");}

    //判断键存在if (openWith.ContainsKey("bmp")) // True
    {Console.WriteLine("An element with Key = \"bmp\" exists.");}

    //参数为其它类型 Dictionary<int, string[]> OtherType = new Dictionary<int, string[]>();OtherType.Add(1, "1,11,111".Split(','));OtherType.Add(2, "2,22,222".Split(','));Console.WriteLine(OtherType[1][2]);

    class DouCube{public int Code { get { return _Code; } set { _Code = value; } } private int _Code;public string Page { get { return _Page; } set { _Page = value; } } private string _Page;} 

    //声明并添加元素Dictionary<int, DouCube> MyType = new Dictionary<int, DouCube>();for (int i = 1; i <= 9; i++){DouCube element = new DouCube();element.Code = i * 100;element.Page = "http://www.doucube.com/" + i.ToString() + ".html";MyType.Add(i, element);}

    //遍历元素foreach (KeyValuePair<int, DouCube> kvp in MyType){Console.WriteLine("Index {0} Code:{1} Page:{2}", kvp.Key, kvp.Value.Code, kvp.Value.Page);}