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How to check whether a List contains the elements that match the specified conditions in C#?
To check whether a List contains the elements that match the specified conditions in C#, the code is as follows −
Example
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)); } }
Output
This will produce the following output −
List elements... 255 315 410 500 600 710 800 1000 Does some elements match the predicate = True
Let us now see another example −
Example
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)); } }
Output
This will produce the following output −
List elements... 255 310 410 500 600 Does some elements match the predicate = False
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