Question

我有一个像

这样的字符串HTML代码

 <table id='topInfoBar' style=" width: 100%;" cellspacing='0' border='0'>
 <Tr>
 <td id='lockOrder' clientidmode='static'  style="text-align:Right;color:black;font-weight:bold">  
 <img src='.../images/locked.gif' alt='This order is locked' title='This order is locked!' />
 </td>
 </Tr>
 </table>

我想检查字符串中是否存在id 'lockOrder'，如果是，则要替换img节点，即

<img src='.../images/locked.gif' alt='This order is locked' title='This order is locked!' />

带

 <i class="fa fa-search fa-2x cursorpointer"  title="This order is locked"></i>

希望在c＃中完成。

Answer 1

使用属性Visible并在

中更改

HTML

<table id='topInfoBar' style="width: 100%;" cellspacing='0' border='0'>
    <Tr>
        <td id='lockOrder' clientidmode='static' style="text-align: Right; color: black; font-weight: bold">
            <img src='.../images/locked.gif' alt='This order is locked' title='This order is locked!' runat="server" id="img"/>
            <i class="fa fa-search fa-2x cursorpointer" title="This order is locked" runat="server" id="i" Visible="False"></i>

        </td>
    </Tr>
</table>

CodeBehind C＃

            if (true)
            {
                img.Visible = false;
                i.Visible = true;
            }

替换c＃中的子节点

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