Assembly: System.Web (in system.web.dll)
When you upgrade a Web Parts control to a newer version, there might be changes to the personalizable properties on the upgraded class. For example, an upgraded version of a Web Parts control might no longer support properties that were available in previous versions. In such a scenario, the Web Parts control set might load personalization data from the underlying data store, but have no properties against which to apply this data. If a control implements the IVersioningPersonalizable interface, the Web Parts control is passed the orphaned personalization data. The application can then use this data to update properties in the newer version, or use the data in some other manner. Note that if orphaned properties are detected when importing Web Parts controls, the Load method is also called.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.