The Change PivotTable Data Source dialog allows end-users to select another cell range to use as a PivotTable data source.
Currently, the SpreadsheetControl uses only worksheet data as a data source for a pivot table. External data sources (such as ODC files, OLAP cubes, relational databases, XML files, etc.) are not supported.
End-users can invoke this dialog by clicking the Change Data Source button on the ribbon. Add the Data ribbon group to enable this button (refer to the Lesson 1 - Create a Simple Spreadsheet topic for details on how to provide a Ribbon UI for the SpreadsheetControl).
In the dialog's Table/Range editor, end-users can enter a cell range reference or a table name to use as a data source for the PivotTable report, or select the desired range in the worksheet by clicking the Collapse Dialog button.