/// <summary>
        /// Occurs when trigger presentation (magnifying glass) of the object-valued Argument is triggered.
        /// </summary>
        /// <param name="sender">Sender object.</param>
        /// <param name="e">TriggerEventArgs.</param>
        protected void HandleTriggerExecute(object sender, TriggerEventArgs e)
        {
            // Actualize the context.
            IUContext lContext = null;

            if (Parent != null)
            {
                Parent.UpdateContext();
                lContext = Parent.Context;
            }

            // Initialize class and service name.
            string lClassName     = string.Empty;
            string lContainerName = string.Empty;

            if (IsServiceField)
            {
                IUServiceController lServiceController = Parent as IUServiceController;

                if (lServiceController != null)
                {
                    lClassName     = lServiceController.ClassName;
                    lContainerName = lServiceController.Name;
                }
            }
            else if (IsFilterField)
            {
                IUFilterController lFilterController = Parent as IUFilterController;

                if (lFilterController != null)
                {
                    IUPopulationContext lPopContext = lFilterController.Parent.Context as IUPopulationContext;
                    lClassName     = lPopContext.ClassName;
                    lContainerName = lFilterController.Context.FilterName;
                    lContext       = lPopContext;
                }
            }
            // Create exchange information.
            ExchangeInfoSelectionForward lInfo =
                new ExchangeInfoSelectionForward(
                    Domain,
                    mSelectionScenario,
                    lClassName,
                    lContainerName,
                    Name,
                    MultiSelectionAllowed,
                    IsNavigationalFilter,
                    lContext);

            // Launch scenario.
            ScenarioManager.LaunchSelectionScenario(lInfo, this);
        }