无法从后面的代码访问html列表框控件. [英] Cannot access html listbox control from code behind.

问题描述

大家好，
我有一个由xml解析填充的html列表框.但是，当我尝试获取此html列表框的选定项目时，我无法在其中获取任何itmes，我总是将其计数为null.
我试过了

Hello guys,
I have a html listbox which i have populated by xml parsing. But when i am trying to get the selected items of this html listbox, i am unable to get any itmes in it, i always get its count as null.
I tried this

Control drpSkills_ctrl = (ListBox)FindControl("ctl00$ContentPlaceHolder1$drpSkills");

使用上面的代码，我可以在rpSkills_ctrl中获得列表框，但是我没有获得.items.count属性.

任何人都可以帮助我如何获取列表框并对其项目执行foreach或for循环

With the above code i am able to get the listbox in rpSkills_ctrl but i dont get .items.count property.

Can anyone help how can i get the listbox and do foreach or for loop on its items

推荐答案

ContentPlaceHolder1

ContentPlaceHolder1

drpSkills");

drpSkills");

使用上面的代码，我可以在rpSkills_ctrl中获得列表框，但是我没有获得.items.count属性.

任何人都可以帮助我如何获取列表框并对其列表项进行foreach或for循环

With the above code i am able to get the listbox in rpSkills_ctrl but i dont get .items.count property.

Can anyone help how can i get the listbox and do foreach or for loop on its items

您不能直接访问该控件吗?即使是这样的服务器端HTML控件:

Can''t you access the control directly? Even if it''s a server side Html control like this:

<select runat="server" id="drpSkills">
//options
</select>

您仍然应该可以像这样直接访问它:

You should still be able to access it directly like this:

Control drpSkills_ctrl = drpSkills;

或如果问题是找到了控件但无法访问它的项目集合，则需要将其强制转换为正确的类型，该类型应为HtmlSelect:

http://msdn.microsoft.com/en-us/library/807bc327.aspx [ ^ ]

or if the problem is that you''ve found the control, but you can''t access it''s items collection, you''ll need to cast it to the correct type which should be HtmlSelect:

http://msdn.microsoft.com/en-us/library/807bc327.aspx[^]

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