list [i]是C#中list.get_item(i)的别名吗? [英] Is list[i] an alias for list.get_item(i) in C#?

问题描述

我正在传递一个lambda表达式作为参数.

I'm passing a lambda expression as a parameter.

在这种情况下，someObject具有一个名为property的属性，可通过someObject.property访问.

In this case, someObject has a property called property accessible with someObject.property.

我通过时:o => o.childListOfObjects[0].property

其中childListOfObjects是List<someObejct>和，

expression.Body返回o => o.childListOfObjects.get_Item(0).property.

跳到最后:

list[i]是C#中list.get_item(i)的别名吗?

推荐答案

是的，属性通常只是get_PropertyName和set_PropertyName方法周围的语法糖.

Yes, properties in general are just syntactic sugar around get_PropertyName and set_PropertyName methods.

索引器-例如，list[i]只是一种特殊类型的属性，基本上是get_Item(i)和set_Item(i)方法周围的语法糖.

Indexers -- for example, list[i] -- are just a special type of property, basically syntactic sugar around get_Item(i) and set_Item(i) methods.

(请注意，不一定必须将索引器属性称为Item，

(Note that the indexer property doesn't necessarily have to be called Item, but that's what it's called on List<T>, and that's the default name given to indexers on custom types too unless you override it using IndexerNameAttribute.)

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