// 引入js文件

        HtmlGenericControl scriptControl = new HtmlGenericControl("script");

        scriptControl.Attributes.Add("type", "text/javascript");

        scriptControl.Attributes.Add("language", "JavaScript");

        scriptControl.Attributes.Add("src", "http://images.dayoo.com/travel/9208.files/changeimg.js");

        Page.Header.Controls.Add(scriptControl);

        // 引入样式表

        Literal cssControl = new Literal();

        cssControl.Text = "<link href=http://www.mamicode.com/"http://images.dayoo.com/photo/17358.files/css.css\" rel=\"stylesheet\" type=\"text/css\"/>";

        Page.Header.Controls.Add(cssControl);

ASP.NET动态引用样式表(css)和脚本(js)文件