Gets or sets the custom data for this data source.
Assembly: Microsoft.PerformancePoint.Scorecards.Client (in Microsoft.PerformancePoint.Scorecards.Client.dll)
This is an optional container for storing data as a string or serialized object. It can be used to store information that your data source needs that is not stored in another property. For example, an Excel Workbook data source uses it to store the contents of an Excel file as a serialized dataset. For an example of how a custom data source uses , see How to: Create tabular data source editors for PerformancePoint Services in SharePoint 2013.