Help with Sort Inside RadListView and RadAjaxPanel Sort Buttons Disappear

[Todd]

Hi,

I am trying to figure out how to apply a custom sort using the RadListView which is inside a RadAjaxPanel.  Whenever I click on a LinkButton to cause a sort change, all the link buttons disappear.

Here is some code that shows the ascx layout:

    <telerik:RadAjaxLoadingPanel
        ID="RadAjaxLoadingPanelDiscussion"
        Transparency="1"
        Width="100%"
        Height="100%"
        runat="server" />
    <telerik:RadAjaxPanel
        ID="RadAjaxPanelDiscussion"
        LoadingPanelID="RadAjaxLoadingPanelDiscussion"
        runat="server"
        >
        <telerik:RadListView
            ID="RadListViewDiscussion"
            DataSourceID="LinqDataSource"
            ItemPlaceholderID="ProductsHolder"
            OnItemCommand="RadListViewDiscussion_ItemCommand"
            runat="server"
            >
            <LayoutTemplate>
                <div id="discussion-sort">
                    <table  cellpadding="0" cellspacing="0" width="100%;" style="clear: both;">
                        <tr>
                            <td>
                                Sort by:
                            </td>
                            <td>
                                <asp:LinkButton
                                    ID="LinkButtonSubject"
                                    CommandName="Sort"
                                    CommandArgument="Subject"
                                    Visible='<%# this.SortSubject %>'
                                    Font-Bold='<%# this.SelectedSort == DiscussionListWebPart.DefaultSortOption.Subject %>'
                                    runat="server"
                                    >
                                    Subject
                                    <asp:Image
                                        ID="ImageSubject"
                                        Visible='<%# this.SelectedSort == DiscussionListWebPart.DefaultSortOption.Subject %>'
                                        ImageUrl='<%# this.GetSortDirectionImageUrl() %>'
                                        runat="server"
                                        />
                                </asp:LinkButton>
                                <asp:Literal ID="Literal1"
                                    Text=" | "
                                    runat="server"
                                    Visible='<%# this.SortSubject %>'
                                    >
                                </asp:Literal>
                            </td>
                            <td>
                                <asp:LinkButton
                                    ID="LinkButtonBody"
                                    CommandName="Sort"
                                    CommandArgument="Body"
                                    Visible='<%# this.SortBody %>'
                                    Font-Bold='<%# this.SelectedSort == DiscussionListWebPart.DefaultSortOption.Body %>'
                                    runat="server"
                                    >
                                    Body
                                    <asp:Image
                                        ID="ImageBody"
                                        Visible='<%# this.SelectedSort == DiscussionListWebPart.DefaultSortOption.Body %>'
                                        ImageUrl='<%# this.GetSortDirectionImageUrl() %>'
                                        runat="server"
                                        />
                                </asp:LinkButton>

...

The LinkButton.Visible property does not change, is always true, so that isn't the issue.  It has something to do with the ajax call.  Also, there is a Literal that has a visibility set to the same property.  The Literals don't disappear, but all the LinkButtons that apply sort do.

Is there something else I need to wire up?

Thanks!

[Todd]

I figured it out.  I added a normal asp:button to the page and it didn't disappear.  Then I removed the nested <asp:Image inside of the <asp:LinkButton> and things worked.