<asp:Repeater ID="r1" runat="server" OnItemDataBound="r1_ItemDataBound">
            <ItemTemplate>
                <div>
                    <asp:Literal ID="l_destbl1" runat="server"></asp:Literal>
                </div>
                <div style="margin-left:10px"> 
                    <asp:DataGrid ID="dgTBL2" runat="server" AutoGenerateColumns="false">
                        <Columns>
                            <asp:TemplateColumn>
                                <ItemTemplate>
                                    <asp:Button ID="btn_delTBL2" runat="server" />
                                </ItemTemplate>
                            </asp:TemplateColumn>
                            <asp:BoundColumn DataField="DESTBL2" HeaderText="DES_TBL2"></asp:BoundColumn>
                        </Columns>
                    </asp:DataGrid>
                    <div style="margin-left:10px">
                        <asp:DataGrid ID="dgTBL3" runat="server" AutoGenerateColumns="false">
                            <Columns>
                                <asp:TemplateColumn>
                                  <ItemTemplate>
                                       <asp:Button ID="btn_delTBL3" runat="server" />
                                   </ItemTemplate>
                                </asp:TemplateColumn>
                                <asp:BoundColumn DataField="DESTBL3" HeaderText="DES_TBL3"></asp:BoundColumn>
                            </Columns>
                        </asp:DataGrid>
                    </div>   
                </div>                             
            </ItemTemplate>
        </asp:Repeater>