how to bind accordion with repeater

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ASP.NET

Hi, Friends

I am trying to bind accordion control at run time. Header is loading,but the content is not loading. please correct me where i gone wrong

This is the code to load accordion Header

public DataTable EventName()
    {
        string tablename = "Event";
        SqlCommand cmd = new SqlCommand();
        cmd.CommandType = CommandType.Text;
        cmd.CommandText = "Select EventName from EventNames order by EventName";
        return GetData(cmd, tablename).Tables[0];
    }

In the page load event i write like this

if (!IsPostBack)
    {
        dataacess da = new dataacess();

        DataTable dt = da.EventName();
        Accordion1.DataSource = dt.DefaultView;
        Accordion1.DataBind();

    }

the aspx page design is like this

<asp:Accordion runat="server" ID="Accordion1" SuppressHeaderPostbacks="true" HeaderCssClass="accordionHeader"
        HeaderSelectedCssClass="accordionHeaderSelected" ContentCssClass="accordionContent" Width="500"
        OnItemDataBound="Accordion1_ItemDataBound">
        <HeaderTemplate>
            <asp:Label runat="server" ID="lblEventName" Text='<%#Eval("EventName") %>'> </asp:Label>
        </HeaderTemplate>
        <ContentTemplate>
            <asp:HiddenField runat="server" ID="hidEventName" Value='<%#Eval("EventName") %>'>
            </asp:HiddenField>
           
                <asp:Repeater ID="Repeater1" runat="server">
                    <ItemTemplate>
                        <p>
                            <asp:Label runat="server" ID="litDate" Text='<%# DataBinder.Eval(Container.DataItem, "Description") %>'
                                Font-Size="Medium" ForeColor="Maroon" Font-Bold="True"></asp:Label><br />
                            
                                <asp:Literal runat="server" ID="litDesc1" Text='<%# "Date: " + DataBinder.Eval(Container.DataItem, "EDate", "{0:dd/MMM/yyyy,dddd}") %>'></asp:Literal>
                            
                            <br />
                            Description:
                            <asp:Literal runat="server" ID="litDesc2" Text='<%# DataBinder.Eval(Container.DataItem, "Description2") %>'></asp:Literal></p>
                    </ItemTemplate>
                    <SeparatorTemplate>
                        <hr />
                    </SeparatorTemplate>
                </asp:Repeater>
           
        </ContentTemplate>
    </asp:Accordion>

Accordion OnItemDataBound event

protected void Accordion1_ItemDataBound(object sender, AjaxControlToolkit.AccordionItemEventArgs e)
   {
       if (e.ItemType==AjaxControlToolkit.AccordionItemType.Content)
       {
           Repeater Repeater1 = (Repeater)e.AccordionItem.FindControl("Repeater1");
           HiddenField hidEventName = (HiddenField)e.AccordionItem.FindControl("hidEventName");

           dataacess da = new dataacess();
           Repeater1.DataSource = da.EventHistory(pname, hidEventName.ToString());
           Repeater1.DataBind();
       }
   }

If i use the code separately to bind the repeater its working without any problem.
Where i should i make changes to work it proper