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Not sure how to write server variables to ItemTemplate

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PanelBar

This is a migrated thread and some comments may be shown as answers.

J asked on 23 Mar 2010, 04:25 PM

I have the following code and it seems to work fairly well:

    
            <table cellpadding="0" border="0" cellspacing="0">  
        
                <tr> 
        
                    <td><%= Class.Property %></td>  
        
                </tr> 
        
            </table>

Now the problem is that the data doesnt get written when I place the previous code in a RadPanelBar ItemTemplate:

    
            <telerik:RadPanelBar ID="SummaryPanelBar" runat="server">  
        
                <Items> 
        
                    <telerik:RadPanelItem Text="General">  
        
                        <ItemTemplate> 
        
            <table cellpadding="0" border="0" cellspacing="0">  
        
                <tr> 
        
                    <td><%= Class.Property %></td>  
        
                </tr> 
        
            </table> 
        
                        </ItemTemplate> 
        
                    </telerik:RadPanelItem> 
        
                </Items> 
        
            </telerik:RadPanelBar>

Any clue as to why?

J

1 Answer, 1 is accepted

Accepted

answered on 26 Mar 2010, 03:18 PM

Hi J,

The "<%= %>" used in a value of a property in the declarative markup of a control do not work as expected. The expressions are intended to write some HTML directly to the output stream when the page is actually being written (to the stream).

You can use a binding expression "<%# %>", which assigns the evaluated result to the respective property, e.g.

<telerik:RadPanelBar ID="SummaryPanelBar" runat="server">

<Items>

<telerik:RadPanelItem Text="General">

<ItemTemplate>

<table cellpadding="0" border="0" cellspacing="0">

<tr>

<td><%# Class.Property %></td>

</tr>

</table>

</ItemTemplate>

</telerik:RadPanelItem>

</Items>

</telerik:RadPanelBar>

This, however will only work when the respective Item's DataBind method has been called or (the DataBind method of the parent RadPanelBar).

Sincerely yours,
Simon
the Telerik team

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