RegionEvent TKey, TValue  CallbackArgument Property Pivotal GemFire .NET Client Documentation
Returns the callbackArgument passed to the method that generated this event. See the Region interface methods that take a callbackArgument parameter.

Namespace: GemStone.GemFire.Cache.Generic
Assembly: GemStone.GemFire.Cache (in GemStone.GemFire.Cache.dll) Version: 8.1.0.0
Syntax

public Object CallbackArgument { get; }
See Also