Hello Erika,

What I can suggest you in order to achieve your requirement is to use a child row to show your popup information.

I have modified the sample so that the row is expanded when a text inside the cell is clicked.

In this sample, each parent row has one child row, and a child band has only one TemplateColumn defined.
If you click a cell text for “Test2” column, the child row is displayed.

Let me know if I may be of further assistance.

Thank you,
Mihoko Kamiishi

Hi,

I've looked at you sample but if you looked at my picture, you will notice that the "tooltip" is part of xamgrdi itself, like a child of another row.