对象初始化器和集合初始化器，类似自动属性，一种省事的写法，参见下例绿色部分：

1 namespace Demo 2 { 3     class Program 4     { 5         static void Main(string[] args) 6         { 7             //以前我们可能这么写 8             //对象 9             Person p1 = new Person();10             p1.Name = "Joey";11             p1.Age = 25;12             //集合13             List
     
       ps1 = new List
      
       ();14             Person joey = new Person();15             joey.Name = "joey";16             joey.Age = 25;17             Person zhangSan = new Person();18             zhangSan.Name = "ZhangSan";19             zhangSan.Age = 18;20             //然后加入集合21             ps1.Add(joey);22             ps1.Add(zhangSan);23             //数组24             int[] a1 = new int[3];25             a1[0] = 1;26             a1[1] = 2;27             a1[2] = 3;28 29             //有了初始化器后 我们可以这么写30             //对象31             var p2 = new Person { Name = "Joey", Age = 25 };32 33             //集合34             var ps2 = new List
       
         { 35                 new Person{ Name="Joey", Age=25 },36                 new Person{Name="ZhangSan", Age=18 }37             };38             //数组39             var a2 = new int[] { 1, 2, 3 };40         }41     }42 43     public class Person44     {45         public int ID { get; private set; }46 47         public string Name { get; set; }48         public int Age { get; set; }49 50     }51 }