LiteralControl 控件实现动态添加CSS

using System;


using System.Data;


using System.Configuration;


using System.Collections;


using System.Web;


using System.Web.Security;


using System.Web.UI;


using System.Web.UI.WebControls;


using System.Web.UI.WebControls.WebParts;


using System.Web.UI.HtmlControls;




public partial class CommonQuery_PageRegStyle : System.Web.UI.Page






{


protected string strAlert = "Hello, Happy New Year!";


protected void Page_Load(object sender, EventArgs e)






{




}


protected override void OnPreRender(EventArgs e)






{




string cssFrageMent = "<style type='text/css'> "


+ ".CommonQueryBtn {"


+ " border:0; width:64px;height:20px;background:url('"


+ HttpRuntime.AppDomainAppVirtualPath + @"/images/BUTTON/btn.jpg');"


+" }</style>";


LiteralControl include = new LiteralControl(cssFrageMent);


this.Page.Header.Controls.Add(include);


base.OnPreRender(e);


}


}