repeater后台怎么取前台的Textbox 值
<div id="ShowOptions" style="display:none" runat="server">
<table>
<tr>
<td>
<asp:Label ID="Label18" runat="server" Text="选 项:"></asp:Label>
</td>
</tr>
<asp:Repeater ID="repeater2" runat="server">
<ItemTemplate>
<tr>
<td>
<asp:Label ID="label11" runat="server" Text='<%#Eval("rcount") %>'>:</asp:Label>
</td>
<td>
<asp:TextBox ID="textbox10" runat="server" Text='<%# Eval("optionsItem") %>'></asp:TextBox>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
<tr>
<td>
<asp:Button ID="buttonUp1" runat="server" Text="修 改" OnClick="buttonUp1_Click"/>
</td>
</tr>
</table>
</div>
-------------这个是repeater代码
后台怎取repeater的值呢