Assembly: System.Web (in System.Web.dll)
The property exposes the APIs to call into a set of WebPartManager methods that are used mostly in extensibility cases.
The designed way to use these internal methods is to access them through the property. Because the property is protected, you can only access it and call the methods within an instance of the WebPartManagerInternals class by inheriting from the WebPartManager class.
This property is hidden from IntelliSense in Microsoft Visual Studio 2005. However, in a derived WebPartManager class, you can still access the property and its various members.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.