ASP.Net 之 System.Collections.Generic 下的容器类-优快云博客

System.Collections.Generic.Dictionary<>;      //键/值对集合
System.Collections.Generic.KeyValuePair<>;    //键/值对结构, 作为 Dictionary<> 的一个元素存在
System.Collections.Generic.SortedDictionary<>; //相当于 Key 能自动排序 Dictionary<>
System.Collections.Generic.SortedList<>;      //和 SortedDictionary<> 功能相似, 但内部算法不同, 其 Keys、Values 可通过索引访问

System.Collections.Generic.HashSet<>;   //无序、无重复的元素集合
System.Collections.Generic.SortedSet<>; //相当于能自动排序的 HashSet<>
System.Collections.Generic.List<>;     //相当于泛型的 ArrayList, 元素可重复、可排序、可插入、可索引访问

System.Collections.Generic.Queue<>; //队列, 先进先出
System.Collections.Generic.Stack<>; //堆栈, 后进先出

System.Collections.Generic.LinkedList<>;    //双向链表
System.Collections.Generic.LinkedListNode<>; //LinkedList<> 的节点

System.Collections.Generic.SynchronizedCollection<>;       //线程安全的集合
System.Collections.Generic.SynchronizedReadOnlyCollection<>; //线程安全的只读集合
System.Collections.Generic.SynchronizedKeyedCollection<>;   //线程安全的键/值集合

Dictionary<>、KeyValuePair<>:

protected void Button1_Click(object sender, EventArgs e)
{
   Dictionary<string, int> dict = new Dictionary<string, int>();
   dict.Add("K1", 123);
   dict["K2"] = 456;
   dict.Add("K3", 789);

   string str = "";
   foreach (KeyValuePair<string, int> k in dict)
   {
      str += string.Format("{0}-{1}; ", k.Key, k.Value); //K1-123; K2-456; K3-789; 
   }
   TextBox1.Text = str;
}

SortedDictionary<>:

protected void Button1_Click(object sender, EventArgs e)
{
   SortedDictionary<string, int> dict = new SortedDictionary<string, int>();
   dict.Add("K3", 333);
   dict["K1"] = 111;
   dict.Add("K2", 222);

   SortedDictionary<string, int>.KeyCollection ks = dict.Keys;
   SortedDictionary<string, int>.ValueCollection vs = dict.Values;

   string s1, s2, s3;
   s1 = s2 = s3 = "";

   foreach (KeyValuePair<string, int> k in dict)
   {
      s1 += string.Format("{0}-{1}; ", k.Key, k.Value); //K1-111; K2-222; K3-333;
   }

   foreach (string s in ks) { s2 += s + "; "; }        //K1; K2; K3;
   foreach (int n in vs) { s3 += n.ToString() + "; "; }  //111; 222; 333; 

   TextBox1.Text = s1 + "\n" + s2 + "\n" + s3;
}

SortedList<>:

protected void Button1_Click(object sender, EventArgs e)
{
   SortedList<string, int> dict = new SortedList<string, int>();
   dict.Add("K3", 333);
   dict["K1"] = 111;
   dict.Add("K2", 222);

   string s1, s2, s3;
   s1 = s2 = s3 = "";

   foreach (KeyValuePair<string, int> k in dict)
   {
      s1 += string.Format("{0}-{1}; ", k.Key, k.Value); //K1-111; K2-222; K3-333;
   }

   s2 = dict.Keys[0];           //K1
   s3 = dict.Values[0].ToString(); //111

   TextBox1.Text = s1 + "\n" + s2 + "\n" + s3;
}

HashSet<>、SortedSet<>:

protected void Button1_Click(object sender, EventArgs e)
{
   HashSet<string> hs = new HashSet<string>();
   hs.Add("ccc");
   hs.Add("bbb");
   hs.Add("aaa");

   SortedSet<string> ss = new SortedSet<string>();
   ss.Add("ccc");
   ss.Add("bbb");
   ss.Add("aaa");

   string s1 = "", s2 = "";

   foreach (string s in hs) { s1 += s + " "; } //ccc bbb aaa 
   foreach (string s in ss) { s2 += s + " "; } //aaa bbb ccc 

   TextBox1.Text = s1 + "\n" + s2;
}

List<>:

protected void Button1_Click(object sender, EventArgs e)
{
   List<int> list = new List<int>();
   list.Add(11);
   list.Add(22);
   list.Insert(0, 33);

   string s1, s2 = "", s3, s4 = "";

   s1 = list[0].ToString(); //33
   for (int i = 0; i < list.Count; i++) { s2 += list[i].ToString() + " "; } //33 11 22

   list.Sort();

   s3 = list[0].ToString(); //11
   foreach (int n in list) { s4 += n.ToString() + " "; } //11 22 33 

   TextBox1.Text = s1 + "\n" + s2 + "\n" + s3 + "\n" + s4;
}

LinkedList<>、LinkedListNode<>:

protected void Button1_Click(object sender, EventArgs e)
{
   LinkedList<string> list = new LinkedList<string>();
   list.AddFirst("aaa");
   list.AddLast("bbb");
   list.AddFirst("ccc");
   list.AddAfter(list.First, "ddd");
   list.AddBefore(list.Last, "eee");

   string s1 = "", s2 = "", s3 = "", s4 = "", s5 = "";

   foreach (string s in list) { s1 += s + " "; } //ccc ddd aaa eee bbb 

   LinkedListNode<string> node = list.First;
   s2 = node.Value.ToString();       //ccc
   node = node.Next;
   s3 = node.Value.ToString();       //ddd
   node = list.Last.Previous.Previous;
   s4 = node.Value.ToString();       //aaa

   list.Remove("eee");
   list.RemoveFirst();
   list.RemoveLast();

   node = list.First;
   while (node != null)
   {
      s5 += node.Value.ToString() + " "; //ddd aaa 
      node = node.Next;
   }
   TextBox1.Text = s1 + "\n" + s2 + "\n" + s3 + "\n" + s4 + "\n" + s5;
}

转自：http://www.soaspx.com/dotnet/asp.net/tech/tech_20110111_7088.html