---方式一---
HtmlMeta DESc = new HtmlMeta();
            DESc.Name = "Description";
            DESc.Content = Model.MetaDesc + "全国最专业的游戏推广成效分享平台";
            Page.Header.Controls.Add(DESc);            HtmlMeta Keys = new HtmlMeta();
            Keys.Name = "keywords";
            Keys.Content = Model.MetaKeywords + "全国最专业的游戏推广成效分享平台";
            Page.Header.Controls.Add(Keys);