方法一 (head 必须添加runat=”server”)
script = new HtmlGenericControl("script");
script.Attributes.Add("type", "text/javascript");
script.InnerHtml = " alert(111)";
this.Header.Controls.Add(script);
script = script = new HtmlGenericControl("script");
script.Attributes.Add("type", "text/javascript");
script.InnerHtml = " alert(111)";
this.Header.Controls.Add(script);
script =