Access a nested repeaters controls propeties

Hi,
 I Have two repeaters one nested inside the other. During the page load in vb code behind I need to be able to access the button1,button2, and button3 visible property inside the child repeater . I want to be able to make these buttons visible or invisible based on users variables. Right now I can't figure out how to access those properties I the page load, Please help.  I pasted the Page and its code behind below.

<%@ Page Title="" Language="VB" MasterPageFile="~/EEMainMaster.master" AutoEventWireup="false" CodeFile="testrepeator.aspx.vb" Inherits="testrepeator" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>

<script type="text/javascript">

    $("body").on("click", "[src*=plus]", function () {

        $(this).closest("tr").after("<tr><td></td><td colspan = '999'>" + $(this).next().html() + "</td></tr>")

        $(this).attr("src", "images/minus.png");

    });

    $("body").on("click", "[src*=minus]", function () {

        $(this).attr("src", "images/plus.png");

        $(this).closest("tr").next().remove();

    });

</script>
    <H1 style="text-align:center" >Communications Committee Activities</H1>
    <asp:Repeater ID="rptCustomers" runat="server" OnItemDataBound="OnItemDataBound">

    <HeaderTemplate>

        <table style="width: 100%"class="Grid" cellspacing="0" rules="all" border="0">

         

    </HeaderTemplate>

    <ItemTemplate>
        <tr>
             <td align="bottom" colspan=" 4">

                 <span  style="width:33%;font-weight:bold" >
                     <asp:Image ID="Image2" runat="server" ImageUrl="~/imgs/Gear.jpg" Width ="23px" Height="23px" /><%# Eval("Activityshortname")%></span>
                 <span  style="width:33%" ><%# Eval("ActivityfullDescription") %></span>
                 <span  style="width:33%;font-weight:bold" > This has been assigned to the <%# Eval("[Committee Asigned to]") %></span>
                 <%--<asp:label  ID="HiddenField1" runat="server" text='<%# Eval("ActivityID")%>' BorderWidth="1" />--%>
                 <%--<asp:Label ID="lblContactName"     runat="server" Text='<%# Eval("Activityshortname")%>' />--%>
                 <asp:label visible="false" ID="HiddenField1" runat="server" text='<%# Eval("ActivityID")%>' /> <br />
                 
                 
                                       
                       
                             <br />
                 <asp:TextBox ID="TextBox2" placeholder='<%# "Add a comments here for [" + Eval("Activityshortname").toupper + "]"%>'  style="width:50%;height:44px" runat="server" MaxLength="0" TextMode="MultiLine">
                 </asp:TextBox><asp:Button ID="button2" class="button button4" runat="server" Text="Post it"  OnClick="GetValue"  /><br />  
            </td>

           

        </tr>
        <tr>

            <td colspan ="4" >

               

                    <asp:Repeater ID="rptOrders" runat="server" >

                        <HeaderTemplate>
                            <Center>
                            <table style="width: 85%" cellspacing="0" rules="all" border="0">

                                <tr>
                                   
                                    <th scope="col" style ="width: 150px;background-clip: padding-box;background-color: white;color: Black;border: 5px solid white;">
                                        Comments

                                    </th>
                                     
                                 
                                       

                                    </th>

                                </tr>

                        </HeaderTemplate>

                        <ItemTemplate>

                            <tr>
                               
                                <td style ="background-clip: padding-box;background-color: lightgrey;color: Black;border: 5px solid white;" >

                                   
                                    <asp:Image ID="Image1" runat="server" ImageUrl="~/imgs/Avatar.jpg" Width ="25px" Height="25px" />
                                    <span style="font-weight:bold"><%# Eval("Title")%> <%# Eval("FirstName")%> <%# Eval("LastName")%></span> <br /> <span style="font-weight:bold;color:#A4A4A4">Comment <%# Eval("Status")%></span><br />
                                    <asp:Label ID="lblOrderDate" runat="server" Text='<%# Eval("[RecNote]")%>' /> <span style="font-weight:bold">
                                   
                                       
                                </td>
                               
                                <td style ="width:5%;background-clip: padding-box;background-color: white;color: Black;border: 5px solid white;" >

                                    <asp:Button ID="button2" class="button button4" runat="server" Text="Approve"  OnClick="GetValue"  />
                                 
                                   
                                </td>
                                <td style ="width:5%;background-clip: padding-box;background-color: white;color: Black;border: 5px solid white;" >
                                    <asp:Button ID="button3" class="partApprovebutton button4" runat="server" Text="Part APP"  OnClick="GetValue"  />
                                </td>
                                <td style ="width:5%;background-clip: padding-box;background-color: white;color: Black;border: 5px solid white;" >
                                    <asp:Button ID="button1" class="Denybutton button4" runat="server" Text="Deny"  OnClick="GetValue"  />
                                </td>
                            </tr>

                        </ItemTemplate>

                        <FooterTemplate>

                            </table></Center>

                        </FooterTemplate>

                    </asp:Repeater>

                </asp:Panel>

                <asp:HiddenField ID="hfActivityId" runat="server" Value='<%# Eval("ActivityID")%>' />
               

            </td>

           
        </tr>

    </ItemTemplate>

    <FooterTemplate>

        </table>

    </FooterTemplate>

</asp:Repeater>


    </asp:Content>


VBCODEBEHIND__________________________________________________


Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration
Partial Class testrepeator
    Inherits System.Web.UI.Page


    Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
        Dim SqlSelectString As String

        SqlSelectString = "SQL Statement)"
        If Not Me.IsPostBack Then

            ' rptCustomers.DataSource = GetData("SQL Statement")
            rptCustomers.DataSource = GetData(SqlSelectString)

            rptCustomers.DataBind()

        End If
    End Sub
   


    Private Shared Function GetData(query As String) As DataTable

        Dim constr As String = ConfigurationManager.ConnectionStrings("StrategicPlanConnectionString").ConnectionString

        Using con As New SqlConnection(constr)

            Using cmd As New SqlCommand()

                cmd.CommandText = query

                Using sda As New SqlDataAdapter()

                    cmd.Connection = con

                    sda.SelectCommand = cmd

                    Using ds As New DataSet()

                        Dim dt As New DataTable()

                        sda.Fill(dt)

                        Return dt

                    End Using

                End Using

            End Using

        End Using

    End Function
    Protected Sub OnItemDataBound(sender As Object, e As RepeaterItemEventArgs)

        If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then

            Dim customerId As String = TryCast(e.Item.FindControl("hfActivityId"), HiddenField).Value

            Dim rptOrders As Repeater = TryCast(e.Item.FindControl("rptOrders"), Repeater)

            'rptOrders.DataSource = GetData(String.Format("SQL STatement))

            rptOrders.DataSource = GetData(String.Format("SQL Statement")

            rptOrders.DataBind()

        End If
    End Sub

    Protected Sub GetValue(ByVal sender As Object, ByVal e As EventArgs)

        'Reference the Repeater Item using Button.

        Dim item As RepeaterItem = TryCast((TryCast(sender, Button)).NamingContainer, RepeaterItem)



        'Reference the Label and TextBox.

        ' Dim message As String = "Customer Id: " & (TryCast(item.FindControl("lblCustomerId"), Label)).Text
        Dim message As String = " Id and comment : " & (TryCast(item.FindControl("TextBox2"), TextBox)).Text

       
        message += "\nCountry: " & (TryCast(item.FindControl("HiddenField1"), Label)).Text




        ClientScript.RegisterStartupScript(Me.GetType(), "alert", "alert('" & message & "');", True)

    End Sub

   

End Class