asp.net添加、去除head中的Meta

添加Meta：

1 HtmlMeta keyWords = new HtmlMeta();
2 keyWords.Name = "Keywords";
3 keyWords.Content = "游戏";
4 Header.Controls.Add(keyWords);

去除Meta：

 1 using System.Web.UI.HtmlControls;
 2 
 3  for (int i = 0; i < Header.Controls.Count; i++)
 4 {
 5       if (Header.Controls[i] is HtmlMeta)
 6       {
 7             Header.Controls.Remove(Header.Controls[i]);
 8       }
 9 }
10