在 C# 中获取或设置 ArrayList 中指定索引处的元素
以下为在 ArrayList 中获取或设置指定索引处的元素的代码 −
示例
using System; using System.Collections; public class Demo { public static void Main() { ArrayList arrList = new ArrayList(); arrList.Add("Laptop"); arrList.Add("Desktop"); arrList.Add("Notebook"); arrList.Add("Ultrabook"); arrList.Add("Tablet"); arrList.Add("Headphone"); arrList.Add("Speaker"); Console.WriteLine("Elements in ArrayList..."); foreach(string str in arrList) { Console.WriteLine(str); } Console.WriteLine("Element at index 5 = " + arrList[5]); } }
输出
这将生成以下输出 −
Elements in ArrayList... Laptop Desktop Notebook Ultrabook Tablet Headphone Speaker Element at index 5 = Headphone
示例
让我们看另一个示例 −
using System; using System.Collections; public class Demo { public static void Main() { ArrayList arrList = new ArrayList(); arrList.Add("Laptop"); arrList.Add("Desktop"); arrList.Add("Notebook"); arrList.Add("Ultrabook"); arrList.Add("Tablet"); arrList.Add("Headphone"); arrList.Add("Speaker"); Console.WriteLine("Elements in ArrayList..."); foreach(string str in arrList) { Console.WriteLine(str); } Console.WriteLine("Element at index 5 = " + arrList[5]); arrList[5] = "SSD"; Console.WriteLine("Element at index 5 (Updated) = " + arrList[5]); } }
输出
这将生成以下输出 −
Elements in ArrayList... Laptop Desktop Notebook Ultrabook Tablet Headphone Speaker Element at index 5 = Headphone Element at index 5 (Updated) = SSD
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