BExIS.Web.Shell.Areas.DCM.Controllers.FormController.ActivateComplexUsageInAChoice C# (CSharp) Method

        public ActionResult ActivateComplexUsageInAChoice(int parentid, int id)
        {
            TaskManager = (CreateTaskmanager)Session["CreateDatasetTaskmanager"];

            //TaskManager.SetCurrent(TaskManager.Get(parentStepId));

            StepModelHelper stepModelHelper = GetStepModelhelper(id);
            //StepModelHelper parentStepModelHelper = GetStepModelhelper(parentStepId);

            BaseUsage u = LoadUsage(stepModelHelper.Usage);

            bool active = stepModelHelper.Activated ? false : true;
            stepModelHelper.Activated = active;
            stepModelHelper.Parent.Activated = active;

            var firstOrDefault = stepModelHelper.Childrens.FirstOrDefault();
            if (firstOrDefault != null)
                firstOrDefault.Activated = active;

            StepModelHelper pStepModelHelper = GetStepModelhelper(stepModelHelper.Parent.StepId);
            pStepModelHelper.Activated = active;

            // update stepmodel to dictionary
            //AddStepModelhelper(newStepModelhelper);

            //update stepModel to parentStepModel
            for (int i = 0; i < pStepModelHelper.Childrens.Count; i++)
            {
                StepModelHelper child = pStepModelHelper.Childrens.ElementAt(i);
                StepModelHelper childStepModelHelper = GetStepModelhelper(child.StepId);
                child.Activated = child.StepId.Equals(id);
                childStepModelHelper.Activated = child.StepId.Equals(id);

                var childOfChild = child.Childrens.FirstOrDefault();
                if (childOfChild != null)
                    childOfChild.Activated = child.StepId.Equals(id);
            }

            if (u is MetadataAttributeUsage || u is MetadataNestedAttributeUsage)
            {
                return PartialView("_metadataCompoundAttributeUsageView", pStepModelHelper);
            }

            if (u is MetadataPackageUsage)
            {
                return PartialView("_metadataCompoundAttributeUsageView", pStepModelHelper);
            }

            return null;
        }