Hi Paul / Martin,
Thanks for the update.
In SfDataGrid Collection must be an ObservableCollection or DataTable and also underline property derived from INotifyCollectionChanged. SfDataGrid automatically refresh the UI as ObservableCollection implements INotifyCollectionChanged.
SfDataGrid listens and responds to the manipulation operations such as add, delete and data update (property change) at runtime. DataGrid refresh the sorting, filtering, grouping and summaries based on SfDataGrid.LiveDataUpdateMode property.
There is no related between SfDataGrid.SelectedIndex settings and SfDataGrid DataSource Updation.
if you still facing the same issue? When above mentioned settings are used in your sample, can you please share us below things?
1. Brief replication procedure/video illustration of the reported issue
2. Code snippet related to SfDataGrid settings
3. Syncfusion product version
Regards,
Vijayarasan S