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How to use GroupBy in linq query.

Anonymous User 1837 14-Feb-2016
I want  to use GroupBy in linq query.How to do this Please Help me.
linq linq 
Updated on 14-Feb-2016
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Anonymous User

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14-Feb-2016 

using System;
using System.Linq;
namespace ConsoleDemo
{  
    public class Program
    {
        static void Main()
        {
           
            int[] array = { 21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50};            
            var result = array.GroupBy(a => IsEven(a));
           
            foreach (var group in result)
            {                
                Console.WriteLine("IsEven = {0}:", group.Key);
              
                foreach (var value in group)
                {
                    Console.Write("{0} ", value);
                }
                Console.WriteLine();
            }
            Console.Read();
        }
        static bool IsEven(int value)
        {
            return value % 2 == 0;
        }
    }
}
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