HashTable例子：    
 #region HashTable    
            #region Add    
            Hashtable hashTable = new Hashtable();    
            Hashtable hashTableNews = new Hashtable();    
            string[] StringArray=new string[5];    
            hashTableNews.Add(1, StringArray);    
            hashTableNews.Add(1, 3);    
            hashTableNews.Add(1,4);    
            Console.WriteLine(hashTableNews.);    
            object[] Array = new object[10];    
            hashTable.Add(1, "第一");    
            hashTable.Add(2, "第二");    
            hashTable.Add(3, "第三");    
            hashTable.Add(4, "第四");    
            hashTable.Add(5, "第五");    
            hashTable.Add(6, "第六");    
            #endregion    
            #region Contains    
            bool ContainsResult = hashTable.Contains(2);//查找Key值    
            Console.WriteLine(ContainsResult);    
            bool ContainsKeysResult = hashTable.ContainsKey(7);//查找Key值    
            Console.WriteLine(ContainsKeysResult);    
            bool ContainsValueResult = hashTable.ContainsValue("第一");//查找Value值    
            Console.WriteLine(ContainsValueResult);    
            #endregion    
            int i = hashTable.Count;    
            Console.WriteLine(i);    
            foreach (DictionaryEntry dicEntry in hashTable)    
            {    
                Console.WriteLine(" " + dicEntry.Key + " " + dicEntry.Value);    
            }    
            foreach (var key in hashTable.Keys)    
            {    
                Console.WriteLine(" " + key + " " + hashTable[key]);    
            }    
            Hashtable hashTableNew = (Hashtable)hashTable.Clone();//浅表复制，只复制结构    
    
            hashTable.CopyTo(Array, 3);    
            foreach (var item in Array)    
            {    
                Console.WriteLine(" " + item);    
            }    
            DictionaryEntry[] Array1 = new DictionaryEntry[10];    
            hashTable.CopyTo(Array1, 3);    
            foreach (DictionaryEntry item1 in Array1)    
            {    
                Console.WriteLine(" " + item1.Key + " " + item1.Value);    
            }    
            #region Equals    
            Hashtable hashTable1 = new Hashtable();    
            hashTable1.Add(1, "第一");    
            hashTable1.Add(2, "第二");    
            hashTable1.Add(3, "第三");    
            hashTable1.Add(4, "第四");    
            hashTable1.Add(5, "第五");    
            hashTable1.Add(7, "第六");    
            bool result1 = hashTable.Equals(hashTable1);    
            Hashtable hashTable2 = new Hashtable();    
            hashTable2.Add(1, "第一");    
            hashTable2.Add(2, "第二");    
            hashTable2.Add(3, "第三");    
            hashTable2.Add(4, "第四");    
            hashTable2.Add(5, "第五");    
            hashTable2.Add(6, "第六");    
            bool result2 = hashTable.Equals(hashTable2);    
            Console.WriteLine(result2);    
            Hashtable hashTable3 = hashTable;    
            bool result3 = hashTable.Equals(hashTable3);    
            Console.WriteLine(result3);    
            #endregion    
            Console.ReadLine();    
            hashTable.Remove(2);    
            hashTable.Clear();    
    
            #endregion    
            #region Dictionary    
           Dictionary<string, int> dictionary = new Dictionary<string, int>();    
           Dictionary<string, string[]> dictionary1 = new Dictionary<string, string[]>();    
           Dictionary<string, ArrayList> dictionary2 = new Dictionary<string, ArrayList>();    
           Dictionary<string, emp> dictionary3 = new Dictionary<string, emp>();    
           Dictionary<string[], int> dictionary4 = new Dictionary<string[], int>();    
           string[] value = new string[5];    
           value[1] = "10";    
           dictionary1.Add("1", value);    
           foreach (var item in dictionary1)    
           {    
               Console.WriteLine(" " + item.Key );    
               foreach (var items in item.Value)    
               {    
                   Console.WriteLine(" " + items);    
               }    
           }    
           Console.ReadLine();    
            #endregion