ParentChanged
Introduction
The ParentChanged event is invoked whenever an object's direct parent is changed. This can happen when any of the following occur:
The Parent property is assigned to a null or non-null value
An object is added to a parent's Children collection
An object is added to root
A Forms object creates and adds a child Forms object
Code Example: Handling Parent Changed
The following code raises the ParentChanged event when children are added to a parent using a variety of methods:
var child= new ContainerRuntime();
child.ParentChanged += (_,_) => System.Diagnostics.Debug.WriteLine("parent changed");
var parent = new ContainerRuntime();
// the following code raises the event 4 times
parent.Children.Add(child);
parent.Children.Remove(child);
child.Parent = parent;
child.Parent = null;
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