IfcDoc.FormEdit.listViewValidate_SelectedIndexChanged C# (CSharp) Method

        private void listViewValidate_SelectedIndexChanged(object sender, EventArgs e)
        {
            SEntity entity = null;
            if (this.listViewValidate.SelectedItems.Count == 1)
            {
                entity = (SEntity)this.listViewValidate.SelectedItems[0].Tag;
            }

            this.ctlConcept.CurrentInstance = entity;
            this.ctlProperties.CurrentInstance = entity;

            this.treeViewInstance.Nodes.Clear();
            LoadInstance(null, entity);
        }