Thank you for using Syncfusion products.
We have analyzed your query.
You can achieve your requirement in SfDataGrid as double click event only works for grid rows by find the
VirualizingCellsControl inside the double click event and then perform the
action if the VirtualizingCellsControl is not null.
We already have a kb for this and please find the Kb link as below,
We have also prepared the sample based on this and please find the
sample under the following location,
Please let us know if you need further assistance.
Jai Ganesh S