We have analyzed your query and we have prepared a sample as per your requirement. In this sample, we have added new items in collection and our SfDataGrid refreshed automatically. In Observable collection, the collection implements the INotifyCollectionChanged interface. So SfDataGrid will be refreshed automatically when Add items in collection. Could you please update more information on reported problem like modifying the above sample or provide issue reproducing sample to us? It would be better for us and provide a better solution.