static void Main(string[] args)

{

    //創(chuàng)建字典,Key類型為int,Value類型為string

    Dictionary<int, string> myDictionary = new Dictionary<int, string>();

    //1.添加元素

    myDictionary.Add(1, "a");

    myDictionary.Add(2, "b");

    myDictionary.Add(3, "c");

    //2.刪除元素

    myDictionary.Remove(3);

    //3.假如不存在元素則添加元素

    if (!myDictionary.ContainsKey(4))

    {

        myDictionary.Add(4, "d");

    }

    //4.顯示容量和元素個(gè)數(shù)

    Console.WriteLine("元素個(gè)數(shù)：{0}",myDictionary.Count);

    //5.通過(guò)key查找元素

    if (myDictionary.ContainsKey(1))

    {

        Console.WriteLine("key:{0},value:{1}","1", myDictionary[1]);

        Console.WriteLine(myDictionary[1]);   

    }

    //6.通過(guò)KeyValuePair遍歷元素

    foreach (KeyValuePair<int,string>kvp in myDictionary)

    {

        Console.WriteLine("key={0},value={1}", kvp.Key, kvp.Value);

 

    }

    //7.得到字典的集合

    Dictionary<int, string>.KeyCollection keyCol = myDictionary.Keys;

    //遍歷鍵的集合

    foreach (int n in keyCol)

    {

        Console.WriteLine("key={0}", n);

    }

    //8.得到字典的集合

    Dictionary<int, string>.ValueCollection valCol = myDictionary.Values;

    //遍歷值的集合

    foreach( string s in valCol)

    {

        Console.WriteLine("value：{0}",s);

    }

    //9.使用TryGetValue方法獲取指定鍵對(duì)應(yīng)的值

    string slove = string.Empty;

    if (myDictionary.TryGetValue(5, out slove))

    {

        Console.WriteLine("查找結(jié)果：{0}", slove);

    }

    else

    {

        Console.WriteLine("查找失敗");

    }

    //10.清空字典

    myDictionary.Clear();

    Console.ReadKey();

}