Custom Error handling in DataSheet View with pop-up message or label controls or HTML

I have a requirement in which DataSheet view is used to bulk edit or input list items and handle validations while in the process.

We have validations done in event recievers before creating the list item. But could not provide a pop up or message with summary of all validation errors. these are buiness custom validations.

Is there a way to custom error handle datasheet view? Is there a way to invoke a UI in context from event recievers?