Reloads data from the control's data source and recalculates summaries.
This method reloads data from the control's data source specified by the PivotGridControl.DataSource and PivotGridControl.DataMember properties. This causes the summaries to be recalculated against the data fields.
When the control's data source is modified, the Pivot Grid Control does not automatically reload the records. In this case, the RefreshData method can be called to force the data to reload.