Rowspan in repeater using asp.net C#

Question

<asp:Repeater ID="Customers" runat="server" OnItemDataBound="Customers_ItemDataBound">

<HeaderTemplate>

<table id="tblSample">

<thead>

<tr>

<th scope="col" style="width: 10px">POS

</th>

<th scope="col" style="width: 120px">DEVICE

</th>

</tr>

</thead>

</HeaderTemplate>

<ItemTemplate>

<tbody>

<tr>

<td >

<asp:Label ID="lblCustomerId" runat="server" Text='<%# Eval("cabinet_height") %>' />

</td>

<td rowspan="<%# Eval("rowspan") %>">

<asp:Label ID="lblContactName" runat="server" Text='<%# Eval("devicename") %>' />

</td>

</tr>

</tbody>

</ItemTemplate>

<FooterTemplate>

</table>

</FooterTemplate>

</asp:Repeater>

 

Please help me...