初识LINQ表达式

 

using  System;
using  System.Collections.Generic;
using  System.Linq;
class  app
{
     static   void  Main()
    {
         string [] names  =  {  " Burke " ,  " Connor " ,  " Frank " ,  " Everett " ,  " Albert " ,  " George " ,  " Harris " ,  " David "  };
        IEnumerable < string >  query  =  from s  in  names
                                     where  s.Length  ==   5
                                    orderby s
                                    select s.ToUpper();
         foreach  ( string  item  in  query)
            Console.WriteLine(item);
    }
}