转换对象以从arraylist中检索单个值 [英] casting of object to retrieve individual value from arraylist

问题描述

我有一个问题，因为我是c＃的新手。我做了一个arraylist并存储我的uid并希望把它放到一排图片中


pic 1，pic 2，pic 3，pic 4


这是我的代码把uid放在arraylist


pofile2.aspx.cs

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解决方案

< blockquote>你的错误可能是通过说System.Collections.ArrayList

（或为它添加System.Collections命名空间）来解决的。


但是，如果你有兴趣在网页中显示tabluar数据，我建议查找DataTable对象（和SqlDataAdapter来填充它），然后使用GridView对象来处理表构建

在哪里做我把系统。我在ASPX页面中收藏.ArrayList

？

喜欢<％System.Collections.ArrayList;％>


对不起我真的很新

我会转到代码文件，因为异常可能就行了：

ArrayList list2 = new ArrayList（）;

并将光标放在第一个ArrayList字上。最后一个字母下面可能会出现一条红线。如果你移动它，会出现一个下拉列表，允许你添加命名空间吗？

Hi, i am having a problem as im new to c#. I did an arraylist and store my "uid" and want to put it into a row of pictures

pic 1 , pic 2 , pic 3, pic 4

this is my code for putting the "uid" the arraylist

pofile2.aspx.cs

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解决方案

Well your error could probably be fixed by saying System.Collections.ArrayList
(or adding the System.Collections namespace for it)

However, if you are interested in display tabluar data in a webpage, I recomend looking up the DataTable object(and the SqlDataAdapter to fill it), then using a GridView object to handle the table building

where do i put the System.Collections.ArrayList
in my ASPX page?
Like <%System.Collections.ArrayList ;%>

Sorry Im really new to this

I would go to the code file, since the exception is probably on the line:
ArrayList list2 = new ArrayList();
And put the cursor over the first ArrayList word. A little red line will probably appear under the last letter. If you move over it, a drop down will appear allowing you to add the namespace if you want?

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