C#List <T>.Remove()方法用于从列表中删除给定的项目。
语法:
bool List<T>.Remove(T item);
参数:接受要从列表中删除的T类型的项目。
返回值:如果成功删除项目,则返回布尔值-如果列表中未找到项目,则返回true-返回false。
示例
int list declaration: List<int> a = new List<int>(); adding elements: a.Add(10); a.Add(20); a.Add(30); a.Add(40); a.Add(50); removing elements a.Remove(10) //将返回true a.Remove(40) //将返回true a.Remove(60) //将返回假 Output: 20 30 50
using System; using System.Text; using System.Collections.Generic; namespace Test { class Program { static void printList(List<int> lst) { //打印元素 foreach (int item in lst) { Console.Write(item + " "); } Console.WriteLine(); } static void Main(string[] args) { //整数列表 List<int> a = new List<int>(); //添加元素 a.Add(10); a.Add(20); a.Add(30); a.Add(40); a.Add(50); //打印列表 Console.WriteLine("list elements..."); printList(a); //删除元素 if (a.Remove(10)) Console.WriteLine("10 is removed."); else Console.WriteLine("10 does not exist in the list."); if (a.Remove(40)) Console.WriteLine("20 is removed."); else Console.WriteLine("20 does not exist in the list."); if (a.Remove(100)) Console.WriteLine("100 is removed."); else Console.WriteLine("100 does not exist in the list."); //删除元素后列出 Console.WriteLine("list elements after removing elements..."); printList(a); //按ENTER退出 Console.ReadLine(); } } }
输出结果
list elements... 10 20 30 40 50 10 is removed. 20 is removed. 100 does not exist in the list. list elements after removing elements... 20 30 50