Here is a possible approach that you could take for this scenario:
You can see a RadListView showing RadBinaryImages populated from DB here:
For raising a server event on clicking an image, you could use the onclick client event handler to raise an ajax callback, through the ajaxRequest client method of RadAjax:
You can pass the ID as an argument of this method, so in the server AjaxRequest event you can access it from e.Argument.
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