void ProcessRaiseCallbackEvent (ICallbackEventHandler target, ref string callbackEventError)
{
string callbackArgument = _requestValueCollection [CallbackArgumentID];
try {
target.RaiseCallbackEvent (callbackArgument);
} catch (Exception ex) {
callbackEventError = String.Concat ("e", RuntimeHelpers.DebuggingEnabled ? ex.ToString () : ex.Message);
}
}