BExIS.Dcm.CreateDatasetWizard.CreateTaskmanager.Remove C# (CSharp) Method

        public StepInfo Remove(StepInfo parent, int index)
        {
            try
            {
                parent.Children.RemoveAt(index);

                for (int i = index; i < parent.Children.Count; i++)
                {
                    int position = i + 1;
                    parent.Children.ElementAt(i).title = position.ToString();
                }

            }
            catch (Exception ex)
            {

            }

            return parent;
        }

        public ActionResult RemoveComplexUsage(int parentStepId, int number)
        {
            TaskManager = (CreateTaskmanager)Session["CreateDatasetTaskmanager"];

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

            StepModelHelper stepModelHelper = GetStepModelhelper(parentStepId);
            RemoveFromXml(stepModelHelper.XPath + "//" + UsageHelper.GetNameOfType(stepModelHelper.Usage).Replace(" ", string.Empty) + "[" + number + "]");

            BaseUsage u = LoadUsage(stepModelHelper.Usage);

            if (u is MetadataAttributeUsage || u is MetadataNestedAttributeUsage)
            {
                CreateCompoundModel(TaskManager.Current().Id, true);
            }

            if (u is MetadataPackageUsage)
            {
                stepModelHelper.Model = CreatePackageModel(TaskManager.Current().Id, true);
            }

            stepModelHelper.Childrens.RemoveAt(number - 1);

            //add stepModel to parentStepModel
            for (int i = 0; i < stepModelHelper.Childrens.Count; i++)
            {
                stepModelHelper.Childrens.ElementAt(i).Number = i + 1;
            }

            TaskManager.Remove(TaskManager.Current(), number - 1);

            if (u is MetadataAttributeUsage || u is MetadataNestedAttributeUsage)
            {
                return PartialView("_metadataCompoundAttributeView", stepModelHelper);

            }
            else if (u is MetadataPackageUsage)
            {
                return PartialView("_metadataCompoundAttributeView", stepModelHelper);
            }

            return null;
        }