数据结构
网络
RDBMS
操作系统
Java
MS Excel
iOS
HTML
CSS
Android
Python
C 编程
C++
C#
MongoDB
MySQL
Javascript
PHP
物理
化学
生物
数学
英语
经济学
心理学
社会学
时尚研究
法律研究在 C# 中向 Hashtable 中添加元素
要向 Hashtable 添加元素，代码如下所示 -
示例
using System;
using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable(10);
hash.Add("1", "A");
hash.Add("2", "B");
hash.Add("3", "C");
hash.Add("4", "D");
hash.Add("5","E");
hash.Add("6", "F");
hash.Add("7", "G");
hash.Add("8","H");
hash.Add("9", "I");
hash.Add("10", "J");
Console.WriteLine("Hashtable Key and Value pairs...");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Count of entries in Hashtable = "+ hash.Count);
hash.Add("11", "K");
Console.WriteLine("Hashtable Key and Value pairs...UPDATED");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Count of entries in Hashtable (updated) = "+hash.Count);
}
}输出
这将产生以下输出 -
Hashtable Key and Value pairs... 10 and J 1 and A 2 and B 3 and C 4 and D 5 and E 6 and F 7 and G 8 and H 9 and I Count of entries in Hashtable = 10 Hashtable Key and Value pairs...UPDATED 10 and J 1 and A 2 and B 3 and C 4 and D 5 and E 6 and F 7 and G 8 and H 9 and I 11 and K Count of entries in Hashtable (updated) = 11
示例
我们现在来看另一个示例 -
using System;
using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable(10);
hash.Add("1", "SUV");
hash.Add("2", "Electric Cars");
hash.Add("3", "AUV");
hash.Add("4", "Utility Vehicle");
hash.Add("5","Compact Car");
hash.Add("6", "Sedan");
hash.Add("7","Crossover");
Console.WriteLine("Enumerator to iterate through the Hashtable...");
IDictionaryEnumerator demoEnum = hash.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
}
}输出
这将产生以下输出 -
Enumerator to iterate through the Hashtable... Key = 1, Value = SUV Key = 2, Value = Electric Cars Key = 3, Value = AUV Key = 4, Value = Utility Vehicle Key = 5, Value = Compact Car Key = 6, Value = Sedan Key = 7, Value = Crossover
更新日期：2019 年 12 月 10 日
254 次浏览
广告