要检查列表是否包含符合C#中指定条件的元素,代码如下-
using System; using System.Collections.Generic; public class Demo { private static bool demo(int i) { return ((i % 3) == 0); } public static void Main(String[] args) { List<int> list = new List<int>(); list.Add(255); list.Add(315); list.Add(410); list.Add(500); list.Add(600); list.Add(710); list.Add(800); list.Add(1000); Console.WriteLine("List elements..."); foreach (int i in list) { Console.WriteLine(i); } Console.WriteLine("Does some elements match the predicate = "+list.Exists(demo)); } }
输出结果
这将产生以下输出-
List elements... 255 315 410 500 600 710 800 1000 Does some elements match the predicate = True
现在让我们来看另一个示例-
using System; using System.Collections.Generic; public class Demo { private static bool demo(int i) { return ((i % 7) == 0); } public static void Main(String[] args) { List<int> list = new List<int>(); list.Add(255); list.Add(310); list.Add(410); list.Add(500); list.Add(600); Console.WriteLine("List elements..."); foreach (int i in list) { Console.WriteLine(i); } Console.WriteLine("Does some elements match the predicate = "+list.Exists(demo)); } }
输出结果
这将产生以下输出-
List elements... 255 310 410 500 600 Does some elements match the predicate = False