Order by string length in CSharp

using System;//  ww  w  .j  av a2s  .c o m
using System.Collections.Generic;
using System.Linq;
public class MainClass {
    public static void Main() {
        string[] names = { "Java", "Pascal", "GWT Vaadin", "Pass" };

        IEnumerable<string> query = names.Where(n => n.Contains("a"))
                                         .OrderBy(n => n.Length)
                                         .Select(n => n.ToUpper());

            foreach (var item in query)
            {
                Console.WriteLine(item);
            }
    }
}