ClearScript does not provide this capability. Handlers for a given event generally aren't aware of each other, and the only way to do what you want in .NET is via reflection. With ClearScript you can of course allow the script to use reflection, or provide
an alternate event connection API that does what you want behind the scenes.
However, some events are naturally "single-cast". That is, the semantics of the event are such that only one handler should
be connected. If you're developing the event source, consider if that applies to the event in question. If it does, you can use
custom event accessors
to provide the required behavior in an elegant manner.
demonstrates the technique.
Thanks for your question, and good luck!