Telerik.Web.Mvc.UI.ComboBoxHtmlBuilder.InnerContentTag C# (CSharp) Метод

        public IHtmlNode InnerContentTag()
        {
            IHtmlNode root = new HtmlTag("div").AddClass("t-dropdown-wrap t-state-default");

            IHtmlNode input = new HtmlTag("input")
                    .Attributes(new { type = "text",
                                      title = Component.Id })
                    .Attributes(Component.InputHtmlAttributes)
                    .PrependClass(UIPrimitives.Input)
                    .AppendTo(root);

            if(Component.Items.Any() && Component.SelectedIndex != -1)
            {
                input.Attribute("value", Component.Items[Component.SelectedIndex].Text);
            }

            if (Component.Id.HasValue())
            {
                input.Attributes(new
                {
                    id = Component.Id + "-input",
                    name = Component.Name + "-input"
                });

                string value = Component.ViewContext.Controller.ValueOf<string>(Component.Name + "-input");
                if (value.HasValue())
                {
                    input.Attribute("value", value);
                }
            }

            IHtmlNode link = new HtmlTag("span").AddClass("t-select", UIPrimitives.Header);

            new HtmlTag("span").AddClass(UIPrimitives.Icon, "t-arrow-down").Html("select").AppendTo(link);

            link.AppendTo(root);

            return root;
        }

        protected override void WriteHtml(System.Web.UI.HtmlTextWriter writer)
        {
            if (Items.Any())
            {
                this.PrepareItemsAndDefineSelectedIndex();
            }

            IDropDownHtmlBuilder builder = new ComboBoxHtmlBuilder(this);

            IHtmlNode rootTag = builder.Build();

            builder.InnerContentTag().AppendTo(rootTag);

            builder.HiddenInputTag().AppendTo(rootTag);

            //output window HTML
            rootTag.WriteTo(writer);

            base.WriteHtml(writer);
        }