有关Hashtable作为参数传递的问题

Question

本帖最后由 happytor 于 2009-07-22 08:28:11 编辑

Answer 1

 private static void display(Hashtable ht)
        {
            foreach(DictionaryEntry de in ht)
            {
                Console.WriteLine(de.Key);
                Console.WriteLine(de.Value);
            }
        }
 display(ht);

Answer 2

先找本基础的书看下吧class Program
    {
        private static void display(Hashtable ht)
        {
            foreach(DictionaryEntry de in ht)
            {
                Console.WriteLine(de.Key);
                Console.WriteLine(de.Value);
            }
        }
        public static void Main(string[] args)
        {
            //Console.WriteLine("Hello World!");
            Hashtable ht=new Hashtable();
            
            ht.Add("E","e");
            ht.Add("A","a");
            ht.Add("C","c");
            ht.Add("B","b");
            
            display(ht);
            string s=(string)ht["A"];
            if(ht.Contains("E"))
                Console.WriteLine("the E key exist");
            ht.Remove("C");
            Console.WriteLine(ht["A"]);
            ht.Clear();
            Console.WriteLine(ht["A"]);
            
            
            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }如果前面没加
using System.Collections;
别忘了加上

Answer 3

private void display(Hashtable ht)
        {
            for(DictionaryEntry de in ht)
            {
                Console.WriteLine(de.Key);
                Console.WriteLine(de.Value);
            }
        }应该是：private static void display(Hashtable ht)
        {
            foreach(DictionaryEntry de in ht)
            {
                Console.WriteLine(de.Key);
                Console.WriteLine(de.Value);
            }
        }