在嵌套表中查找HTML控件 [英] Find HTML control in nested table

问题描述

大家好

我编写生成动态表格的代码，作为输出：

< table id =edListdir =rtlcellspacing =0cellpadding =0width =100％align =center> 
< tr style =cursor：pointer;类= TdBold > 
< td onclick =FlipSec（'edClg3'）> Unit< / td> 
< / tr> 
< tr> 
< td>< table id =edClg3runat =server> 
< tr Ident =10style =cursor：pointer; width =100％class =TdBold> 
< td width =10px>< input name =_ ctl6type =checkboxIDENT =10ID =10CType =0runat =serveronclick = CClick（事件）/>< / td> 
< td onclick =FlipSec（'edClg10'）>< / td> 
< td> College< / td> 
< / tr> 
< tr> 
< td>< table id =edClg10runat =serverwidth =100％> 
 tr Ident =1002style =cursor：pointer; width =100％class =TdBold> 
< td width =10px>< input name =_ ctl13type =checkboxIDENT =1002ID =1002CType =0runat =serveronclick = CClick（事件）/>< / td> 
 td onclick =FlipSec（'edClg1002'）> < / TD> 
 td> Department< / td> 
< / tr> 
< / tr> 
< tr> 
< td>< / td> 
< tr> 
< td> 
< table id =edClg4> 
< tr> 
< td> 
< pre>< td width =10px>< input name =_ ctl13type =checkboxIDENT =1002ID =1002CType =0runat =server onclick =CClick（event）/>< / td> 
。 
< / table> 
< / table> 

，....



如何找到Checkbox在内表？



我尝试过：



< pre lang =c＃> for （ int i = 0 ; i< List.Count; i ++）
{
Chk =（HtmlInputCheckBox） this .edList.FindControl（List [I]的ToString（））;
if （Chk！= null ）
Chk.Checked = 真;
}

解决方案

您生成的标记违反了HTML规则之一 - ID必须是唯一的...

您没有告诉我们List [i]是什么，但如果它是ID，则FindControl将在重复的情况下返回null ...

这个可以帮助您理解嵌套结构和FindControl的某些方面：了解ASP.NET模板 [ ^ ]

Hi all
I write code that generates dynamically tables, as output :

 <table id="edList" dir="rtl" cellspacing="0" cellpadding="0" width="100%" align="center">
<tr style="cursor:pointer;" class="TdBold">
<td onclick="FlipSec('edClg3')">Unit </td>
</tr>
<tr>
<td><table id="edClg3" runat="server">
<tr Ident="10" style="cursor:pointer;" width="100%" class="TdBold">
<td width="10px"><input name="_ctl6" type="checkbox" IDENT="10" ID="10" CType="0" runat="server" onclick="CClick(event)" /></td>
<td onclick="FlipSec('edClg10')"></td>
<td>College</td>
</tr>
<tr>
<td><table id="edClg10" runat="server" width="100%">
tr Ident="1002" style="cursor:pointer;" width="100%" class="TdBold">
<td width="10px"><input name="_ctl13" type="checkbox" IDENT="1002" ID="1002" CType="0" runat="server" onclick="CClick(event)" /></td>
td onclick="FlipSec('edClg1002')"> </td>
td>Department</td>
</tr>
</tr>
<tr>
<td></td>
<tr>
<td>
<table id="edClg4">
<tr>
<td>
<pre><td width="10px"><input name="_ctl13" type="checkbox" IDENT="1002" ID="1002" CType="0" runat="server" onclick="CClick(event)" /></td>
.
</table>
</table>

,....

how do I find Checkbox in the inner tables?

What I have tried:

for (int i = 0; i <List.Count; i++)
{
     Chk = (HtmlInputCheckBox)this.edList.FindControl(List[i].ToString());
     if (Chk != null)
         Chk.Checked = true;
}

解决方案

Your generated markup violates one of the rules of HTML - ID must be unique...
You do not tell us what List[i] is, but if it is the ID, than FindControl will return null in case of duplicates...
This one may help you understand some aspects of nested structures and FindControl: Understanding ASP.NET Templates[^]

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