方法一:
<HEAD><title>WebForm1</title><LINK rel="stylesheet" type="text/css" href="" id="mycss"></HEAD> private void Button1_Click(object sender, System.EventArgs e)
{Page.RegisterStartupScript("css",@"<script>mycss.styleSheet.addImport('stylesheet1.css')</script>");
} 方法二:--- ..抄来的...
<HEAD> <title>WebForm1</title> <asp:placeholder id="myplaceholder" runat="server"></asp:placeholder> </HEAD> private void Button2_Click(object sender, System.EventArgs e) {
System.Web.UI.Control a = Page.FindControl("myplaceholder"); System.Web.UI.HtmlControls.HtmlGenericControl objLink = new HtmlGenericControl("LINK"); objLink.Attributes.Add("rel","stylesheet"); objLink.Attributes.Add("type","text/css"); objLink.Attributes.Add("href","StyleSheet1.css"); objLink=objLink; a.Controls.Add(objLink); } [注] asp:placeholder
