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 Phone 8.1, Windows Phone 8, 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.