Event Manager. Listener List. Add(IWeakEventListener) Method
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public: void Add(System::Windows::IWeakEventListener ^ listener);
public void Add (System.Windows.IWeakEventListener listener);
member this.Add : System.Windows.IWeakEventListener -> unit
Public Sub Add (listener As IWeakEventListener)
You should always call PrepareForWriting before changing the list contents. Otherwise, the list may be in process of delivering events and therefore the original is locked. Calling PrepareForWriting changes the input
list to be a clone so that your Add call can still work on the clone. If PrepareForWriting returns
true, you might need to update any private references to the list that you maintain in other areas of your code.