Hi Elio,
Thanks for contacting Syncfusion support.
Query: “Is it possible to not sort automatically a grouped column or use a custom sorting?”
We would like to inform you that, if grouping action is performed for a column in Grid, then the column will be auto sorted, because it is easier and fastest way to club/group the records. This is the default behavior of grouping in Grid.
Currently we do not have support to perform custom sorting in Blazor. We will validate the feasibilities of the custom sorting support and update you the further details on 6th August 2019.
Till then we appreciate your patience.
Regards,
Vignesh Natarajan