将集合属性与成员对象一起使用 [英] Use collection properties with member object

问题描述

如果我有一个集合，说 Cells ，如果引用像 Cells [1,1] 给我一个该集合的对象，但成员对象没有该集合对象具有的某个属性。有没有办法从成员调用该属性？如下，假设 StartPosition 是集合的对象类的属性：

Cells [1,1] .StartPosition

或者

<

Cells [1,1] .ParentCollection.StartPosition

解决方案

您只能调用在您正在访问的对象上定义的属性。

也就是说，如果要调用集合上的方法，请在集合上调用，

您可以 可以添加对包含集合的引用到您放置的每个项目，如果您设计

您的符号是数组符号，用于2维数组。虽然数组是集合，但大多数.NET集合不被视为数组，即使它们有 indexers 。

If I have a collection, say Cells, and if referenced like so Cells[1,1] it gives me an object of that collection but the member object doesn't have a certain property that the collection object has. Is there a way to call that property from the member? Like as follows, assuming StartPosition is a property of the object class for the collection:

Cells[1,1].StartPosition

or maybe

Cells[1,1].ParentCollection.StartPosition

解决方案

You can only call properties that are defined on the object you are accessing.

That is, if you want to call a method on the collection, call it on the collection, not on the content of the collection.

You could add a reference to the containing collection to each item you put in it, if you design and construct your classes that way.

Note:

Your notation is array notation, for 2 dimensional arrays. Though arrays are collections, most .NET collections are not considered to be arrays, even if they do have indexers.

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