How to check whether a List contains a specified element in C#

CsharpServer Side ProgrammingProgramming

To check whether a List contains a specified element, the code is as follows −

Example

 Live Demo

using System;
using System.Collections.Generic;
public class Demo {
   public static void Main(String[] args){
      List<string> list1 = new List<string>();
      list1.Add("One");
      list1.Add("Two");
      list1.Add("Three");
      list1.Add("Four");
      list1.Add("Five");
      Console.WriteLine("Elements in List1...");
      foreach (string res in list1){
         Console.WriteLine(res);
      }
      List<string> list2 = new List<string>();
      list2.Add("India");
      list2.Add("US");
      list2.Add("UK");
      list2.Add("Canada");
      list2.Add("Poland");
      list2.Add("Netherlands");
      Console.WriteLine("Elements in List2...");
      List<string>.Enumerator demoEnum = list2.GetEnumerator();
      while (demoEnum.MoveNext()) {
         string res = demoEnum.Current;
         Console.WriteLine(res);
      }
      Console.WriteLine("Is List2 equal to List1? = "+list2.Equals(list1));
      Console.Write("Does List2 has element Canada? = "+list2.Contains("Canada"));
   }
}

Output

This will produce the following output −

Elements in List1...
One
Two
Three
Four
Five
Elements in List2...
India
US
UK
Canada
Poland
Netherlands
Is List2 equal to List1? = False Does List2 has element Canada? = True

Example

Let us now see another example −

 Live Demo

using System;
using System.Collections.Generic;
public class Demo {
   public static void Main(String[] args){
      List<int> list = new List<int>();
      list.Add(100);
      list.Add(200);
      list.Add(300);
      list.Add(400);
      list.Add(500);
      list.Add(600);
      list.Add(700);
      list.Add(800);
      list.Add(900);
      list.Add(1000);
      Console.WriteLine("Elements in List...");
      foreach (int res in list){
         Console.WriteLine(res);
      }
      Console.Write("Does List has element 150? = "+list.Contains(150));
   }
}

Output

This will produce the following output −

Elements in List...
100
200
300
400
500
600
700
800
900
1000
Does List has element 150? = False
raja
Published on 10-Dec-2019 15:16:31
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