获取使用反射属性参考 [英] Getting a property reference using reflection

问题描述

var a = new obj();
var property = a.GetType().GetProperty("DB").GetValue(a,null) as testObject;

这是否意味着变量属性举行与我在对象中得到了相同的对象，或者一个新的TestObject参考有人认为，持有相同的价值观？

does this mean that the variable property hold a reference to the the same object that i got in object a , or a new testObject was made that holds the same values?

如果这意味着创建一个新的对象，然后我怎么可以得到参考该物业/支持字段使用反射？

if this means creating a new object, then how can i get the reference to that property/backing field using reflection?

推荐答案

属性现在持有的 referece 应用于无论是在 A 的 DB 属性。

property now holds a referece to whatever is in a's DB property.

我不知道但是当你调用会发生什么的GetValue（）对具有值类型的属性，我想你会得到原始值的装箱副本的引用，如装箱和拆箱（C＃编程指南）：

I'm not sure though what happens when you call GetValue() on a property that has a value type, I suppose you get a reference to a boxed copy of the original value, as explained in Boxing and Unboxing (C# Programming Guide):

拳击值类型[为对象在的GetValue（）的情况下]分配的堆和值拷贝到新对象的对象实例。

Boxing a value type [to object in GetValue()'s case] allocates an object instance on the heap and copies the value into the new object.

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