演示System.Collections.Generic的各容器类的用法.
包括：Dictionary，KeyValuePair，SortedDic tionary，SortedList，HashSet，SortedSet，List，Queue，Stack等
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", );
dict["K2"] = ;
dict.Add("K3", ); 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", );
dict["K1"] = ;
dict.Add("K2", ); 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", );
dict["K1"] = ;
dict.Add("K2", ); 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[]; //K1
s3 = dict.Values[].ToString(); // 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();
list.Add();
list.Insert(, ); string s1, s2 = "", s3, s4 = ""; s1 = list[].ToString(); //
for (int i = ; i < list.Count; i++) { s2 += list[i].ToString() + " "; } //33 11 22 list.Sort(); s3 = list[].ToString(); //
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;
}