For this kind of functionality I would suggest you two different approaches:
- Use the :empty selector to create a "whitelist" for which cells the Tooltip box will be displayed. You can use something like this .Filter("td:not(:empty))". However please keep in mind that this is a CSS3 selector and it is only supported in IE9+, Firefox 3+, Safari 3.1+, Chrome 2.0+, Opera 9.5+ etc.
- Another approach is to implement a functionality that will check whether the cell in the grid is empty and if its not empty to add a custom class to it. After that you will be able to use .Filter(".notEmpty"), so again you can filter the cells for which the Tooltip won't be displayed.
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