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

 Live Demo

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

 Live Demo

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

AmitDiwan

Published on 16-Dec-2019 12:03:33