Expanding DataBound items with ItemTemplate

[ile]

Hi,

I'm using RadPanelBar Q1 2010 SP2. and having following scenario: I'm binding the top level items to List<T>. Then under each item I'd like to add ItemTemplate with quite a lot of controls inside (TextBoxes, GridView, etc.) so adding them dynamically in .cs isn't an option. Problem is that following declarative syntax displays right but doesn't expand :

ASPX:

<telerik:RadPanelBar ID="RadPanelBar1" runat="server" Skin="Vista" ExpandMode="FullExpandedItem" DataFieldParentID="Id" DataTextField="Name">
    <ItemTemplate>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    </ItemTemplate>
</telerik:RadPanelBar>

CS:

ObjectiveCollection objectives = user.Objectives;
RadPanelBar1.DataSource = objectives;
RadPanelBar1.DataBind();

[Nikolay Tsenkov]

Hello ile,

The right way to implement this requirement is to create the templates in the code-behind as classes implementing the ITemplate interface. Here is a nice article that should give you an idea: http://www.telerik.com/help/aspnet-ajax/tree_templatesruntime.html

After you implement that you can create a handler to the TemplateNeeded event of the panelBar (it will be thrown for every item that is created from the dataSource, separately) and there you will have the item (in the event arguments), so you can decide which template should it take. Here is a nice reference for this event: http://www.telerik.com/help/aspnet-ajax/telerik.web.ui-telerik.web.ui.radpanelbar-templateneeded_ev.html

Hope this is helpful for you!


Regards,
Nikolay Tsenkov
the Telerik team