在C＃中通过ID动态删除标记

Question

我有一个问题，我有这个表，其中包含大量的信息，它们在线下等等，有3个图像，它们依赖于某些条件等。这是代码：

 <table id="Table1" cellspacing="1" cellpadding="1" width="661" border="0" class="auto-style3">

  <tr>

    <td align="center"><img alt="" src="../images" id="sign1" runat="server" style="height:80px" />
      <asp:Label ID="lblUnderline1" runat="server" Text="____________________________"></asp:Label>
    </td>
    <td align="center"><img alt="" src="../images/" id="sign2" runat="server" style="height:80px" />
      <asp:Label ID="lblUnderline2" runat="server" Text="____________________________"></asp:Label>

    </td>
  </tr>
  <tr>
    <td align="center" runat="server" id="Extra"><img alt="" src="../images" style="height:80px" id="sign3" runat="server" /><br />
      <asp:Label ID="lblUnderline3" runat="server" Text="____________________________"></asp:Label>
    </td>
  </tr>
  <tr>
    <td align="center">
      <asp:Label ID="lblTitle1" runat="server" Text="Vice President"></asp:Label>
    </td>
    <td align="center">
      <asp:Label ID="lblTitle2" runat="server" Text=" Registrar"></asp:Label>
    </td>
  </tr>
</table>

看起来像这样：

如果你看到Sign1和顶部的线之间有一个很大的差距，那么它就在它的正下方。隐藏的第3张图片只有当if语句显示If(This condition){sign3.visible =true时才出现但是线条与标题之间的差距不会消失我试过这个：

// Extra is the <tr> ID
     Extra.Visible = false;                     Extra.Style.Add("display", "none");
                    Extra.Style.Add("width", "0px");

有没有办法在if等条件下从c＃中删除HTML中的整个标记，如

    If(Condition This)
{
// Remove the <tr> Tag along the image in it 
}

Answer 1

因此，当我在此处查看您的代码时，您似乎试图隐藏td内的<tr>' yeah that worked it hides the <td id=Extra but it doesnt hide the <tr，因此请尝试隐藏＆lt; tr>

<tr runat="server" id="Extra" >
<td align="center" ><img alt="" src="../images" style="height:80px" id="sign3" runat="server" /><br />
  <asp:Label ID="lblUnderline3" runat="server" Text="____________________________"></asp:Label>
</td>

这将适用于您当前的动态条件

    Extra.Visible = false;               
  Extra.Style.Add("display", "none");
       Extra.Style.Add("width", "0px");Extra.Style.Add("height", "0px"); // Even this as your default height is 80px