Ext.Net.TreeGrid.OnPreRender C# (CSharp) Метод

        protected override void OnPreRender(EventArgs e)
        {
            foreach (TreeGridColumn column in this.Columns)
            {
                XTemplate tpl = column.XTemplate;

                if (tpl.Html.IsNotEmpty())
                {
                    this.Controls.Add(tpl);
                    this.LazyItems.Add(tpl);
                }
            }

            base.OnPreRender(e);
        }
    }