Hashtable 的煩惱！
using?System;
using?System.Collections;

namespace?NoSortHashtable
{
????///?<summary>
????///?Summary?description?for?Class1.
????///?</summary>
????class?Class1
????{
????????///?<summary>
????????///?The?main?entry?point?for?the?application.
????????///?</summary>
????????[STAThread]
????????static?void?Main(string[]?args)
????????{
????????????Hashtable?hashTable?=?new?Hashtable();

????????????hashTable.Add("hunan","changsha");
????????????hashTable.Add("beijing","beijing");
????????????hashTable.Add("anhui","hefei");
????????????hashTable.Add("sichuan","chengdu");
????????????foreach(string?str?in?hashTable.Keys)
????????????{
????????????????Console.WriteLine(str?+?"?:?"?+?hashTable[str]);
????????????}

????????}
????}
}

打印的結果是：
??? anhui : hefei
??? hunan : changsha
????sichuan : chengdu
??? beijing : beijing
當然，產生這個結果的原因大家都知道，Hashtable內部的排序機制使然，但我現在就是不想排序，我按什么順序輸入的，就想它再怎么給我輸出，怎么辦？去Google酷了一下，卻因為不知道使用什么關鍵字去酷，結果沒有酷出好的相關問題來。
我想到，ArrayList是不排序的啊，那是不是讓ArrayList和Hastable配成良緣，那么它們的結晶就是我想要的呢，既有Hashtable的豐富功能，又可以滿足我的BT的要求（不排序），動手了。
using?System;
using?System.Collections;

namespace?NoSortHashtable
{
????/**////?<summary>
????///?Summary?description?for?NoSortedHashtable.
????///?</summary>
????public?class?NoSortHashtable?:?Hashtable
????{
????????private?ArrayList?keys?=?new?ArrayList();

????????public?NoSortHashtable()
????????{
????????}
????????

????????public?override?void?Add(object?key,?object?value)
????????{
????????????base.Add?(key,?value);
????????????keys.Add?(key);
????????}

????????public?override?ICollection?Keys
????????{
????????????get
????????????{
????????????????return?keys;
????????????}
????????}

????????public?override?void?Clear()
????????{
????????????base.Clear?();
????????????keys.Clear?();
????????}

????????public?override?void?Remove(object?key)
????????{
????????????base.Remove?(key);
????????????keys.Remove????(key);
????????}
????????public?override?IDictionaryEnumerator?GetEnumerator()
????????{
????????????return?base.GetEnumerator?();
????????}

????}
}

再試
??????????? hashTable?=?new?NoSortHashtable();

????????????hashTable.Add("hunan","changsha");
????????????hashTable.Add("beijing","beijing");
????????????hashTable.Add("anhui","hefei");
????????????hashTable.Add("sichuan","chengdu");
????????????foreach(string?str?in?hashTable.Keys)
????????????{
????????????????Console.WriteLine(str?+?"?:?"?+?hashTable[str]);
????????????}
打印結果：
??? hunan : changsha
??? beijing : beijing
??? anhui : hefei
??? sichuan : chengdu

問題解決！！
應該很早之前就有人這么解決，只是我不知道而已，高手也應該有更好的辦法，只是我想不到而已！
見笑，見諒！

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