LINQ

static void QueryOverStrings()
                {
                        //字符串數組
                        string[] currentGames = { "Morrowind", "BioShock", "Half Life 2:Episode 1", "The Darkness", "Daxer", "System Shock 2" };
                        
                        //建造一個查詢表達式，代表數組中多於6個字母的項
                        var subset = from g in currentGames
                                                                                 where g.Length > 6
                                                                                 orderby g
                                                                                 select g;

                        foreach (var s in subset)
                        {
                                Console.WriteLine("Item:{0}", s);
                        }
                        
                        
                        Console.ReadLine();
                }

 

 

通常使用隱式類型來捕獲LINQ的結果集。

 

 

延遲執行，可以爲相同的容器多次應用相同的LINQ查詢，始終獲得最新的結果。

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

                        //獲取小於10的數
                        var subset = from i in numbers
                                                 where i < 10
                                                 select i;

                        foreach (int j in subset)
                                Console.WriteLine(j);
                        Console.WriteLine();

                        numbers[1] = 3;
                        foreach (int j in subset)
                                Console.WriteLine(j);
                        Console.WriteLine();
                }

 

 

可以使用Enumberable獲取查詢的總數

如：

int numb = (from g in currentGames
                         where g.length>6
                         order by g
                         select g).Count<string>();

 

排除重複對象：

var makes = (from c in Mycars select c.make).Distinct<string>();

使用Enumerable類型的泛型Reverse<T>()

 

對表達式進行排序使用orderby，默認是升序排序，使用descending表示降序排序

 

使用Enumberable.Except()方法可以獲得兩個容器之間的不同。

 

 

將查詢結構轉換爲Array類型。

var makeColors = from c in myCars select new {c.make,c.color };

return makesColors.ToArray();

 

從Main（）中調用和處理數據：

Array objs=GetPro();