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C# program to list the difference between two lists
To get the difference between two lists, firstly set two lists in C# −
// first list List < string > list1 = new List < string > (); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D"); // second list List < string > list2 = new List < string > (); list2.Add("C"); list2.Add("D"); foreach(string value in list2) { Console.WriteLine(value); }
To get the difference, use IEnumerable and Except() as shown below. The difference is shown in the third list −
IEnumerable < string > list3; list3 = list1.Except(list2);
The following is the complete code −
Example
using System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main() { List < string > list1 = new List < string > (); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D"); Console.WriteLine("First list..."); foreach(string value in list1) { Console.WriteLine(value); } Console.WriteLine("Second list..."); List < string > list2 = new List < string > (); list2.Add("C"); list2.Add("D"); foreach(string value in list2) { Console.WriteLine(value); } Console.WriteLine("Difference in the two lists..."); IEnumerable < string > list3; list3 = list1.Except(list2); foreach(string value in list3) { Console.WriteLine(value); } } }
Output
First list... A B C D Second list... C D Difference in the two lists... A B
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