ArrayExtension.AddChild Method (Object)
Appends the supplied object to the end of the array.
Assembly: System.Xaml (in System.Xaml.dll)
This method is not intended to be called directly, and does not participate in any existing .NET interpretation of the x:Array markup extension behavior. Any code access to the backing array instance should be done with array APIs or language features. Any alternative XAML reader or XAML writer implementations should instead use the .NET System.Xaml service extensions such as GetAddMethod to determine what method to call, or LookupCollectionKind together with appropriate interface casting.
Available since 3.0