LINQ simple sample for beginners

class Program
{

static void Main(string[] args)
{
//Collection
var primes = new List<int> { 1, 2, 3, 5, 7, 11, 13, 17, 19, 23 };

//SQL like quering
IEnumerable<int> query = from val in primes
where val < 13
select val;

foreach (var val in query)
Console.WriteLine(val);

//using expressions
var methodQuery = primes.Where(x => x < 13);

foreach (var val in methodQuery)
Console.WriteLine(val);

}
}

}
}