Since I have received no reply to my questions, I take it that there is nothing really equivalent in ASP.NET to what I'm looking for. From my further exploration, it seems that the best alternative is to open a new window for entering the details for each item. That way a user could simply click on whichever window the user wished to see.
It apears that the command for doing so is "open method (windows)" with the command window.open(...). Is this the recommended way for opening a new window without closing the current window?