Hi Jeremy,
Thank you for using Syncfusion products.
We
have analyzed your query. You can initialize the property by using the “AddNewRowInitiating” event. This
event will be triggered, when the user start editing in the AddNewRow. We have prepared the sample based on this and please
find the sample under the following location,
Sample: WinrtGridSample.zip
Please let us
know if you need further assistance.
Thank you,
Jai Ganesh S