绑定内部中继器

我有以下中继器：

<asp:Repeater ID="repeater1" runat="server" OnItemDataBound="repeater1_ItemDataBound">
        <HeaderTemplate>
          ...
        </HeaderTemplate>
        <ItemTemplate>
            <tr>
                <td>
                 <asp:Label  runat="server" Text='<%#Eval("id")%>'> </asp:Label></td>
                <td>
                  <asp:Label runat="server" Text='<%#Eval("ssdvalue")%>'></asp:Label>
                </td>
                <td>
                    <asp:Repeater runat="server" ID="repeater2">
                        <ItemTemplate>
                          <asp:Label Text='<%#Eval("stptime")%>' runat="server"></asp:Label>
                        </ItemTemplate>
                    </asp:Repeater>
                </td>
  </tr>      
        </ItemTemplate>
    </asp:Repeater>

现在在上面的代码中有两个中继器：中继器1和中继器2（在标签内）

对于上面，我编写了以下代码：

DataSet ds = new DataSet();
    ds = cls.ReturnDataSet("sp_data",
         new SqlParameter("@From_Time", "2014-11-01 00:00:00.000"),
         new SqlParameter("@To_Time", "2014-11-03 00:00:00.000"));
    repeater1 .DataSource = ds.Tables[0];
    repeater1 .DataBind();

这将绑定中继器1。

对于 Repeater2，我编写了以下代码：

 protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            DataSet ds = new DataSet();
            ds = cls.ReturnDataSet("sp_data",
                 new SqlParameter("@From_Time", "2014-11-01 00:00:00.000"),
                 new SqlParameter("@To_Time", "2014-11-03 00:00:00.000"));
            Repeater rpt = (Repeater)e.Item.FindControl("Repeater2");
            rpt.DataSource = ds.Tables[1];
            rpt.DataBind();
        }
    }

现在整个输出是这样的：

Id    Ssdvalue  stptime
1      112      3 hours 4hours 5 hours 6 hours 12minutes 20minutes
2      234      3 hours 4hours 5 hours 6 hours 12minutes 20minutes
3      450      3 hours 4hours 5 hours 6 hours 12minutes 20minutes
4      987      3 hours 4hours 5 hours 6 hours 12minutes 20minutes
5      456      3 hours 4hours 5 hours 6 hours 12minutes 20minutes
6      091      3 hours 4hours 5 hours 6 hours 12minutes 20minutes

但是上面的输出是不正确的。

I want output like Below:
   Id    Ssdvalue  stptime
    1      112      3 hours
    2      234      4hours
    3      450      5 hours
    4      987      6 hours
    5      456      12minutes
    6      091      20minutes

那么如何获得上述输出呢？

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || 
          e.Item.ItemType == ListItemType.AlternatingItem)
       {
          DataSet ds = new DataSet();
          ds = cls.ReturnDataSet("sp_data",
                 new SqlParameter("@From_Time", "2014-11-01 00:00:00.000"),
                new SqlParameter("@To_Time", "2014-11-03 00:00:00.000"));         
        Label Label1 = (Label)e.Item.FindControl("Label1");
        Repeater rpt = (Repeater)e.Item.FindControl("Repeater2");
        var source = ds.Tables[1].AsEnumerable()
                .Where(x => x.Field<int>("Id") == Convert.ToInt32(Label1.Text))
                .Select(x => new 
                      { 
                          stptime= x.Field<DateTime>("stptime")
                      });
       rpt.DataSource = source ;
       rpt.DataBind();
      }
}