Adds the provided element as a child of this element.
Assembly: PresentationFramework (in PresentationFramework.dll)
This method can throw an exception if called at a time when the logical tree is being iterated by another process.
Most FrameworkContentElement derived classes expose dedicated collections that are responsible for containment (for example, Inlines on the Span class; Blocks on the Section class). You can typically avoid any need to manipulate the logical tree directly if you derive from these classes instead. Working with the logical tree for content elements is an advanced scenario that may require a specialized parser or a specialized FrameworkElement that acts as the parent rendering element (content host).
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.