I found out that there's no such property inside the GridViewComboBoxColumn control to get the selected value. I tried a lot of things to get this value in my code but nothing worked, and I really need to use the selected value in my ComboBox since other cells will be supposed to be updated thanks to the selection.
Is there any way to do it please ?
I've two subsidiary questions : why this control doesn't contain this property like the RadComboBox, what's the point ? And, I also tried to write
And it appears that OldValueReference is unknown. I copied that from my var content, like in the pictures.
Thanks for your help !