[原创]c# 类中 Collection 字段初始化的特殊之处

1.今天看一下StackExchange.Redis的源代码,里面有这样一段代码

    public sealed class ConfigurationOptions : ICloneable
    {
...
public EndPointCollection EndPoints
        {
            get
            {
                return this.endpoints;
            }
        }
...

        }    

调用时是这样调用的

 var option = new ConfigurationOptions()
            {
                AbortOnConnectFail = false,
                EndPoints = {connectionString}
            };

顿时感觉到诧异,不明白为什么只有get方法的属性可以被初始化时赋值,如果是非初始化的赋值是不行的

 //option.EndPoints={connectionString}; 这个可以理解,这是编译不通过的

但是实在不理解为什么初始化时可以.

于是测试了以下代码(结果是编译不通过)

    internal class CustomerComponent
    {
        private Customer names;

        public Customer Names
        {
            get { return this.names; }
        }
    }

 var customerComponent = new CustomerComponent()
            {
                Names = customers[]
            };

又测试了下面的(奇迹出现了,编译通过了)

 internal class CustomerList
    {
        private List<string> names;

        public List<string> Names
        {
            get { return this.names; }
        }
    }

           var customerList= new CustomerList()
            {
                Names = {"",""}
            };

internal class CustomerList2
    {
        private List<Customer> names;

        public List<Customer> Names
        {
            get { return this.names; }
        }
    }

  var customerList2 = new CustomerList2()
            {
                Names =
                {
                    new Customer()
                    {
                       Name = "G"
                    },
               }
            };

一直不明白为什么,但是大概总结出来规律, 就是只有Collection类型的字段,才可能如此!

如果有知道的朋友,麻烦告知我为什么.