Eval works on the Master template because there we use repeater which is bind to a datasource of IContent objects. The Details mode contains just standard ASP.NET controls which values are set dynamically and no one of these controls is a bindable control where you can use Eval
1. Override the ContentView control and its SetSingleItemContent
2. Use the url rewrite data from the query string
to get the item and set the values
All the best,
the Telerik team
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