RadPanelItem with RadListBox dynamic binding?

[Brian Mains]

Hello,

I tried to adopt what was done in your MVC forum sample project for the RadPanelBar.  What I want to do is add a series of RadPanelItem's that contain a RadListBox control as its interface.  The RadListBox will be data bound.  But I'm getting an error about adding controls after prerender.  Is there something I can do to remedy that, or do the RadPanelItem/RadListBox have to be hard coded in?

My approach was:

<%
if (Model.Groups != null)
{
    foreach (var group in Model.Groups)
    {
        RadListBox box = new RadListBox();
        box.DataSource = group.Items;
        box.DataTextField = "Name";
        box.DataValueField = "Key";

        box.DataBind();

        RadPanelItem item = new RadPanelItem(group.Name);
        item.Controls.Add(box);

        rpbContacts.Items.Add(item);
    }
}
%>

<tel:RadPanelBar ID="rpbContacts" runat="server" />

Thanks.

[Georgi Krustev]

Hello Brian,

To achieve your goal you will need to render the controls with HtmlHelper. Here is attached a simple test project which shows how to use RadHtmlHelper.

Greetings,
Georgi Krustev
the Telerik team

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