C#: Basic structure of LINQ

C# Sharp LINQ: Exercise-1 with Solution

Write a program in C# Sharp to show how the three parts of a query operation execute.

Sample Solution:

C# Sharp Code:

using System;
using System.Linq;

class LinqExercise1
{        
    static void Main()
    {
        //  The first part is Data source.
        int[] n1 = new int[10] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

        Console.Write("\nBasic structure of LINQ : "); 
        Console.Write("\n---------------------------");

        // The second part is Query creation.
        // nQuery is an IEnumerable<int>
        var nQuery =
            from VrNum in n1 // Creating a query expression that retrieves even numbers from the array
            where (VrNum % 2) == 0
            select VrNum;

        // The third part is Query execution.

        Console.Write("\nThe numbers which produce the remainder 0 after divided by 2 are : \n");
        foreach (int VrNum in nQuery) // Loop through the result of the query and display the numbers
        {
            Console.Write("{0} ", VrNum);
        }
         Console.Write("\n\n");
    }
}

Sample Output:

Basic structure of LINQ :                                                                                     
---------------------------                                                                                   
The numbers which produce the remainder 0 after divided by 2 are :                                            
0 2 4 6 8

Flowchart:

C# Sharp Code Editor:

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