云飞扬的ITblog

在C# 3.0里，对象和集合初始化更容易了
继续新特性之自动属性，现在看看如何对象和集合初始化
用上篇的Point类
public class Point
{
    public int X { get; set; }
    public int Y { get; set; }
}

对象类初始化可以这样定义了

Point p = new Point { X = 3, Y = 99 };

==========================

如果是集合初始化，主要继承了System.Collections.Generic.IEnumerable<T> ，并且有个公共方法Add可以进行初始化集合初始化
集合初始化例子具体如下
List<Point> Square = new List<Point>
        {
            new Point { X=0, Y=5 },
            new Point { X=5, Y=5 },
            new Point { X=5, Y=0 },
            new Point { X=0, Y=0 }
        };

完整的例子源码

 class Program
    {
        static List<Customer> CreateCustomers()
        {
         return new List<Customer>
        {
            new Customer(1) { Name = "Alex Roland",      City = "Berlin"        },
            new Customer(2) { Name = "Oliver Cox",       City = "Marseille"     },
            new Customer(3) { Name = "Maurice Taylor",   City = "London"        },
            new Customer(4) { Name = "Phil Gibbins",     City = "London"        },
            new Customer(5) { Name = "Tony Madigan",     City = "Torino"        },
            new Customer(6) { Name = "Elizabeth A. Andersen", City = "Portland" },
            new Customer(7) { Name = "Justin Thorp",  City = "London"       },
            new Customer(8) { Name = "Bryn Paul Dunton",  City = "Portland"     }
        };
      }

        static void Main(string[] args)
        {
            List<Customer> customers = CreateCustomers();

            Console.WriteLine("Customers:\n");
            foreach (Customer c in customers)
                Console.WriteLine(c);
        }

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