/// <summary>
        /// Removes the activity.
        /// </summary>
        /// <param name="instanceId">The instance id.</param>
        /// <param name="parentActivity">The parent activity.</param>
        /// <param name="activityQualifiedName">Name of the activity qualified.</param>
        public static void RemoveActivity(object parentActivity, string activityQualifiedName)
        {
            CompositeActivity parent = parentActivity as CompositeActivity;

            if (parent == null)
            {
                throw new ArgumentException("The parent activity should be CompositeActivity.", "parentActivity");
            }

            Activity activity = parent.GetActivityByName(activityQualifiedName);

            if (activity != null)
            {
                parent.Activities.Remove(activity);
            }

            // OZ Addon Alpply Modification to Workflow Instance
            //if (instanceId != Guid.Empty)
            //{
            //    try
            //    {
            //        //Guid instanceId = Guid.NewGuid();
            //        WorkflowInstance instance = GlobalWorkflowRuntime.WorkflowRuntime.GetWorkflow(instanceId);

            //        Activity root = instance.GetWorkflowDefinition();

            //        WorkflowChanges wc = new WorkflowChanges(root);

            //        CompositeActivity tmpParent = (CompositeActivity)wc.TransientWorkflow.GetActivityByName(parent.QualifiedName);
            //        Activity tmpChild = wc.TransientWorkflow.GetActivityByName(activity.QualifiedName); ;

            //        tmpParent.Activities.Remove(tmpChild);

            //        instance.ApplyWorkflowChanges(wc);
            //    }
            //    catch (Exception ex)
            //    {
            //        System.Diagnostics.Trace.WriteLine(ex.ToString());
            //    }
            //}
            // End
        }
 internal static Activity FindActivityByName(CompositeActivity parentActivity, string qualifiedName)
 {
     return(parentActivity.GetActivityByName(qualifiedName, true));
 }