如何移除 C# 中 List 中指定索引处的元素?


若要从 List 的指定索引处移除元素,代码如下 -

示例

 实时演示

using System;
using System.Collections.Generic;
public class Demo {
   public static void Main(String[] args){
      List<string> list = new List<string>();
      list.Add("Ryan");
      list.Add("Kevin");
      list.Add("Andre");
      list.Add("Tom");
      list.Add("Fred");
      list.Add("Jason");
      list.Add("Jacob");
      list.Add("David");
      Console.WriteLine("Count of elements in the List = "+list.Count);
      Console.WriteLine("Enumerator iterates through the list elements...");
      List<string>.Enumerator demoEnum = list.GetEnumerator();
      while (demoEnum.MoveNext()) {
         string res = demoEnum.Current;
         Console.WriteLine(res);
      }
      list.RemoveAt(5);
      Console.WriteLine("
Count of elements in the List [UPDATED] = "+list.Count);       Console.WriteLine("Enumerator iterates through the list elements...[UPDATED]");       demoEnum = list.GetEnumerator();       while (demoEnum.MoveNext()) {          string res = demoEnum.Current;          Console.WriteLine(res);       }    } }

输出

这将生成以下输出 -

Count of elements in the List = 8
Enumerator iterates through the list elements...
Ryan
Kevin
Andre
Tom
Fred
Jason
Jacob
David

Count of elements in the List [UPDATED] = 7
Enumerator iterates through the list elements...[UPDATED]
Ryan
Kevin
Andre
Tom
Fred
Jacob
David

示例

现在我们来看另一个示例 -

 实时演示

using System;
using System.Collections.Generic;
public class Demo {
   public static void Main(String[] args){
      List<int> list = new List<int>();
      list.Add(25);
      list.Add(50);
      list.Add(75);
      list.Add(100);
      list.Add(200);
      Console.WriteLine("Count of elements in the List = "+list.Count);
      list.RemoveAt(2);
      Console.WriteLine("
Count of elements in the List [UPDATED] = "+list.Count);    } }

输出

这将生成以下输出 -

Count of elements in the List = 5
Count of elements in the List [UPDATED] = 4

更新于:2019-12-11

190 次浏览

开启您的 职业生涯

通过完成课程获得认证

开始
广告