C# 中移除 ArrayList 指定索引处的元素
csharpserver side programmingprogramming更新于 2025/8/31 14:52:17
要移除 ArrayList 指定索引处的元素，代码如下 −
示例
using System;
using System.Collections;
public class Demo {
public static void Main(String[] args) {
ArrayList list1 = new ArrayList();
list1.Add("A");
list1.Add("B");
list1.Add("C");
list1.Add("D");
list1.Add("E");
list1.Add("F");
list1.Add("G");
list1.Add("H");
list1.Add("I");
Console.WriteLine("Elements in ArrayList1...");
foreach (string res in list1) {
Console.WriteLine(res);
}
ArrayList list2 = new ArrayList();
list2.Add("A");
list2.Add("B");
list2.Add("C");
list2.Add("D");
list2.Add("E");
list2.Add("F");
list2.Add("G");
list2.Add("H");
list2.Add("I");
Console.WriteLine("Elements in ArrayList2...");
foreach (string res in list2)
{
Console.WriteLine(res);
}
Console.WriteLine("Count of elements in ArrayList2 = " + list2.Count);
list2.RemoveAt(5);
Console.WriteLine("Count of elements in ArrayList2 (Updated) = " + list2.Count);
}
}
输出
这将产生以下输出 −
Elements in ArrayList1... A B C D E F G H I Elements in ArrayList2... A B C D E F G H I Count of elements in ArrayList2 = 9 Count of elements in ArrayList2 (Updated) = 8
示例
让我们看另一个例子 −
using System;
using System.Collections;
public class Demo {
public static void Main(String[] args) {
ArrayList list1 = new ArrayList();
list1.Add("Laptop");
list1.Add("Dektop");
list1.Add("Wearables");
list1.Add("Tablet");
list1.Add("Notebook");
list1.Add("Ultrabooks");
Console.WriteLine("Elements in ArrayList1...");
foreach (string res in list1) {
Console.WriteLine(res);
}
Console.WriteLine("Count of elements in ArrayList = " + list1.Count);
list1.RemoveAt(2);
Console.WriteLine("Count of elements in ArrayList (Updated) = " + list1.Count);
}
}
输出
这将产生以下输出 −
Elements in ArrayList1... Laptop Dektop Wearables Tablet Notebook Ultrabooks Count of elements in ArrayList = 6 Count of elements in ArrayList (Updated) = 5
