Introduction to Operators in Linq

Introduction

I have found  new operators in Linq which is use full in day to day programming stuff. Take,Skip,Union,Except ,Intersect operator and Reverse,. Here are explanation of operators how it works.

Take Operator

 Take operator will return first N number of element from entities.

Skip Operator

Skip operator will skip N number of element from entities and then return remaining elements as a result.

Reverse Operator

As name suggest it will reverse order of elements of entities.

Sample Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace ConsoleApplication1
{class Program
  {static void Main(string[] args)
      {string[] a = { "a", "b", "c", "d" };
        

          Console.WriteLine("Take Example");
          var TkResult = a.Take(2);foreach (string s in TkResult)
          {
              Console.WriteLine(s);
          }

          Console.WriteLine("Skip Example");
          var SkResult = a.Skip(2);foreach (string s in SkResult)
          {
              Console.WriteLine(s);
          }

          Console.WriteLine("Reverse Example");
          var RvResult = a.Reverse();foreach (string s in RvResult)
          {
              Console.WriteLine(s);
          }
          
      }
  }
}

Output

Union Operator

Union operator will combine elements of both entity and return result as third new entities.

Except Operator

Except operator will remove elements of first entities which elements are there in second entities and will return as third new entities.

Intersect Operator

As name suggest it will return common elements of both entities and return result as new entities.

Sample

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace ConsoleApplication1
{
 class Program
 {static void Main(string[] args)
     {string[] a = { "a", "b", "c", "d" };string[] b = { "d","e","f","g"};

         var UnResult = a.Union(b);
         Console.WriteLine("Union Result");foreach (string s in UnResult)
         {
             Console.WriteLine(s);           
         }

         var ExResult = a.Except(b);
         Console.WriteLine("Except Result");foreach (string s in ExResult)
         {
             Console.WriteLine(s);
         }

         var InResult = a.Intersect(b);
         Console.WriteLine("Intersect Result");foreach (string s in InResult)
         {
             Console.WriteLine(s);
         }
         Console.ReadLine();
        
     }

 }
}

in above code a simple console application as a example where i have used two string array and applied the three operator one by one and print the result using Console.Writeline. Here is the code for that.

Output

Hope this will help you.