1         static void Main(string[] args)
 2         {
 3             QueryOverStrings();
 4             Console.ReadLine();
 5         }
 6 
 7         static void QueryOverStrings()
 8         {
 9             //假定我們有一個(gè)字符串?dāng)?shù)組
10             string[] currentVideoGames = { "Morrowind", "Uncharted2", "Fallout 3", "Daxter", "System Shock 2" };
11 
12             //構(gòu)建一個(gè)查詢表達(dá)式，來代表數(shù)組中有一個(gè)空格的項(xiàng)
13             IEnumerable<string> subset = from g in currentVideoGames where g.Contains(" ") orderby g select g;
14 
15             //輸出結(jié)果
16             foreach (string s in subset)
17                 Console.WriteLine(s);
18         }

        static void QueryOverInts()
        {
            int[] numbers = { 10, 20, 30, 40, 1, 2, 3, 8};

            //只輸出小于10的項(xiàng)
            //使用隱式類型
            var subset = from i in numbers where i < 10 select i;

            foreach (var i in subset)
                Console.WriteLine(i);
            ReflectOverQueryResults(subset);
        }

 1         static void QueryOverInts()
 2         {
 3             int[] numbers = { 10, 20, 30, 40, 1, 2, 3, 8};
 4 
 5             //只輸出小于10的項(xiàng)
 6 //使用隱式類型
 7             var subset = from i in numbers where i < 10 select i;
 8 
 9             foreach (var i in subset)
10                 Console.WriteLine(i);
11             Console.WriteLine();
12 
13             //修改一些數(shù)據(jù)
14             numbers[0] = 4;
15 
16             //再一次運(yùn)算
17             foreach (var j in subset)
18                 Console.WriteLine(j);
19             Console.WriteLine();
20 
21             ReflectOverQueryResults(subset);
22         }

 1         static void ImmediateExecution()
 2         {
 3             int[] numbers = { 10, 20, 30, 40, 1, 2, 3, 8 };
 4 
 5             //立即獲取數(shù)據(jù)為int[]
 6             int[] subsetAsIntArray =
 7                 (from i in numbers where i < 10 select i).ToArray();
 8 
 9             //立即獲取數(shù)據(jù)為List<int>
10             List<int> subsetAsListOfInts =
11                 (from i in numbers where i < 10 select i).ToList();
12         }