Hi Bernard,
Greetings from Syncfusion support.
Based on your scenario, we suggest you to use the custom way of binding data to Syncfusion Blazor Grid. You can customize the DataOperations and CRUD operations based on your requirement by overriding the default methods Read/ReadAsync, Insert/InsertAsync, Remove/RemoveAsync, Update/UpdateAsync when binding data using CustomAdaptor(custom way of binding).
We suggest you to refer the below documentations for more details on custom way of binding data to grid.
Please get back to us if you need further assistance.
Regards,
Renjith R