Asp.net 动态添加Meta标签

下面代码动态设置浏览器文档模式

HtmlHead head = (HtmlHead)Page.Header;

           HtmlMeta contentType = new HtmlMeta();//显示字符集的设定 设定页面使用的字符集

           contentType.HttpEquiv = "X-UA-Compatible";

           contentType.Content = "IE=Edge";

           head.Controls.AddAt(0, contentType);