GenericWebPart.CreateControlCollection Method ()
Overrides the base method to create a read-only collection that consists of the child control wrapped by a GenericWebPart control.
Assembly: System.Web (in System.Web.dll)
If you want to create a custom GenericWebPart control without adding the child control to the private collection, you can derive from the GenericWebPart class, override the GenericWebPart constructor, and provide a different method for storing the child control referenced by the ChildControl property.
Available since 2.0