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
时尚学
法律学将哈希表元素复制到 C# 中的数组实例
以下是如何将哈希表元素复制到数组实例的代码：-
示例
using System;
using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable();
hash.Add("1", "AB");
hash.Add("2", "CD");
hash.Add("3", "EF");
hash.Add("4", "GH");
hash.Add("5", "IJ");
Console.WriteLine("Hashtable Key and Value pairs...");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Copied to Array Instance...");
DictionaryEntry[] dictArr = new DictionaryEntry[hash.Count];
hash.CopyTo(dictArr, 0);
for (int i = 0; i < dictArr.Length; i++)
Console.WriteLine("Key = "+dictArr[i].Key + ", Value = " + dictArr[i].Value);
}
}输出
此代码会产生以下输出：-
Hashtable Key and Value pairs... 1 and AB 2 and CD 3 and EF 4 and GH 5 and IJ Copied to Array Instance... Key = 1, Value = AB Key = 2, Value = CD Key = 3, Value = EF Key = 4, Value = GH Key = 5, Value = IJ
示例
现在让我们来看另一个示例：-
using System;
using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable(5);
hash.Add("1", "AB");
hash.Add("2", "CD");
Console.WriteLine("Hashtable Key and Value pairs...");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Copied to Array Instance...");
DictionaryEntry[] dictArr = new DictionaryEntry[5];
hash.CopyTo(dictArr, 2);
for (int i = 0; i < dictArr.Length; i++)
Console.WriteLine("Key = "+dictArr[i].Key + ", Value = " + dictArr[i].Value);
}
}输出
此代码会产生以下输出：-
Hashtable Key and Value pairs... 1 and AB 2 and CD Copied to Array Instance... Key = , Value = Key = , Value = Key = 1, Value = AB Key = 2, Value = CD Key = , Value =
更新日期：10-Dec-2019
153 次浏览
广告