DynamicData.List.Label_PreRender C# (CSharp) Метод

        protected void Label_PreRender(object sender, EventArgs e)
        {
            Label label = (Label)sender;
            DynamicFilter dynamicFilter = (DynamicFilter)label.FindControl("DynamicFilter");
            QueryableFilterUserControl fuc = dynamicFilter.FilterTemplate as QueryableFilterUserControl;
            if (fuc != null && fuc.FilterControl != null)
            {
                label.AssociatedControlID = fuc.FilterControl.GetUniqueIDRelativeTo(label);
            }
        }