物品属性 [英] Items property

问题描述

为什么有些集合类，例如BindingList，还有其他类似的

不公开它们的Items属性？它是作为受保护的财产，所以为什么

不公开？


我可以解决这个问题，但必须有一个设计理由，这是什么是吗？


--guy--

解决方案

" guy" < gu*@discussions.microsoft.com> schrieb

为什么有些集合类，比如BindingList，但是其他的
也不暴露他们的Items属性？它是作为一个受保护的财产，所以为什么不把它公之于众？

我可以解决这个问题，但必须有一个设计理由，这是什么？
它是什么？ / blockquote>

BindingList：搜索未找到结果

System.Windows.Forms.BindingsCollection.Item，如果你的意思是公开的。

Armin

嗨Armin，

我的想法是你无法做到

对于myBindingList.Items中的每个对象


你需要做类似的事情

对于i = 1到myBindingList .Count

thing = myBindingList.Item（i）


i只是想知道为什么它是这样设计的


欢呼


家伙


" Armin Zingler"写道：

" guy" < gu*@discussions.microsoft.com> schrieb

为什么有些集合类，比如BindingList，但是其他的
也不暴露他们的Items属性？它是作为一个受保护的财产，所以为什么不把它公之于众？

我可以解决这个问题，但必须有一个设计理由，这是什么？
它是什么？ / blockquote>

BindingList：搜索未找到结果

System.Windows.Forms.BindingsCollection.Item，如果你的意思是公开的话。

Armin

抱歉Armin我应该说清楚，我使用的是vb2005，它是

我引用的System.ComponentModel.BindingList


" Armin Zingler"写道：

" guy" < gu*@discussions.microsoft.com> schrieb

为什么有些集合类，比如BindingList，但是其他的
也不暴露他们的Items属性？它是作为一个受保护的财产，所以为什么不把它公之于众？

我可以解决这个问题，但必须有一个设计理由，这是什么？
它是什么？ / blockquote>

BindingList：搜索未找到结果

System.Windows.Forms.BindingsCollection.Item，如果你的意思是公开的话。

Armin

why is it that some collection classes, eg BindingList, but others as well do
not expose their Items property? It is there as a Protected property so why
not make it public?

I can work around this but there must be a design reason for this, what is it?

--guy--

解决方案

"guy" <gu*@discussions.microsoft.com> schrieb

why is it that some collection classes, eg BindingList, but others
as well do not expose their Items property? It is there as a
Protected property so why not make it public?

I can work around this but there must be a design reason for this,
what is it?

BindingList: "Search found no results"

System.Windows.Forms.BindingsCollection.Item, if you mean that, is public.
Armin

Hi Armin,
my thought was that you cant do a

For Each thing as Object in myBindingList.Items

you have to do something like

For i=1 to myBindingList.Count
thing=myBindingList.Item(i)

i just wondered why it was designed this way

cheers

guy

"Armin Zingler" wrote:

"guy" <gu*@discussions.microsoft.com> schrieb

why is it that some collection classes, eg BindingList, but others
as well do not expose their Items property? It is there as a
Protected property so why not make it public?

I can work around this but there must be a design reason for this,
what is it?

BindingList: "Search found no results"

System.Windows.Forms.BindingsCollection.Item, if you mean that, is public.
Armin

sorry Armin i should have made it clear, i am using vb2005, and it is the
System.ComponentModel.BindingList that i am refering to

"Armin Zingler" wrote:

"guy" <gu*@discussions.microsoft.com> schrieb

why is it that some collection classes, eg BindingList, but others
as well do not expose their Items property? It is there as a
Protected property so why not make it public?

I can work around this but there must be a design reason for this,
what is it?

BindingList: "Search found no results"

System.Windows.Forms.BindingsCollection.Item, if you mean that, is public.
Armin

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