选中复选框时,我有下面的代码来检索表元素。
这样,我就可以得到表ID,当我试图获得带有ID的HtmlTable时,它会抛出空引用异常。
一旦获得带有ID的table元素,就需要遍历该表的行。有人能帮我吗?
ASPX.VB
Protected Sub CheckBox2_CheckedChanged(sender As Object, e As EventArgs)
Dim tab As String
Dim check As CheckBox = CType(sender, CheckBox)
tab = check.Parent.Parent.Parent.ID
Dim tabb As HtmlControl = Me.FindControl(tab)
Dim myTab As HtmlTable = CType(tabb, HtmlTable)
For Each cell As HtmlTableRow In myTab.Rows
//My Code Here
Next
End SubASPX:
<table id="itemlist" class="mel-table" runat="server">
<tr>
<td>
<asp:CheckBox runat="server" ID="CheckBox2" OnCheckedChanged="CheckBox2_CheckedChanged" AutoPostBack="true" />
</td>
</tr>
</table>发布于 2015-05-11 07:47:45
使用嵌套表的父元素ID,如下所示。
Protected Sub CheckBox2_CheckedChanged(sender As Object, e As EventArgs)
Dim tab As String
Dim check As CheckBox = CType(sender, CheckBox)
tab = check.Parent.Parent.Parent.ID
Dim myTab As HtmlTable = CType(mydiv.FindControl(tab), HtmlTable)
For Each cell As HtmlTableRow In myTab.Rows
//My Code Here
Next
End Sub
<div id="mydiv" runat="server">
<table id="itemlist" class="mel-table" runat="server">
<tr>
<td>
<asp:CheckBox runat="server" ID="CheckBox2" OnCheckedChanged="CheckBox2_CheckedChanged" AutoPostBack="true" />
</td>
</tr>
</table>
</div>https://stackoverflow.com/questions/30161003
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