Visual Studio 2013
Adds an observer to the list of observers for the controller. The observer will be notified when a message is added to or removed from the list for this controller.
Assembly: Microsoft.VisualStudio.Modeling.Sdk.12.0 (in Microsoft.VisualStudio.Modeling.Sdk.12.0.dll)
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.