IfcDoc.CtlParameters.toolStripButtonMoveUp_Click C# (CSharp) Method

        private void toolStripButtonMoveUp_Click(object sender, EventArgs e)
        {
            this.m_editcon = true;
            int index = this.dataGridViewConceptRules.SelectedRows[0].Index;

            List<DocTemplateItem> listItems = null;
            if(this.m_conceptleaf != null)
            {
                listItems = this.m_conceptleaf.Items;
            }
            else
            {
                listItems = this.m_conceptroot.ApplicableItems;
            }
            DocTemplateItem dti = listItems[index];
            listItems.Insert(index - 1, dti);
            listItems.RemoveAt(index + 1);

            LoadUsage();
            this.m_editcon = false;
        }