动态添加样式表链接

           HtmlHead header;
            header = Page.Header as HtmlHead;
            if (header != null)
            {
                HtmlLink link = new HtmlLink();
                link.Attributes.Add("href", "sliders.css");
                link.Attributes.Add("media", "screen");
                link.Attributes.Add("rel", "stylesheet");
                link.Attributes.Add("type", "text/css");
                header.Controls.Add(link);
            }