I have asked this question before. What I have is a class that I have written that hold some data. I place objects of this class in the first column of each row so when I double click on a row I have easy access to a particular piece of info about that row. However, when I double click on the cell that has my object in it. The type gets changed from CellValue (The name of my class) to String. Is there a way I can stop this particular behavior? Thank you.