.net 弹出消息框后导致页面样式变乱解决方法

Response.Write("<script language=javascript>"); 
Response.Write("window.alert('"); 
Response.Write("计划添加失败！"); 
Response.Write("');"); 
Response.Write("</script>"); 
修改为：ClientScript.RegisterStartupScript(GetType(), "", "window.alert('计划添加失败！');", true);