asp.net下js的正规写法！

                 StringBuilder scriptstring = new StringBuilder();
                scriptstring.Append("<script language=javascript>");
                scriptstring.Append("alert('添加成功!');");
                scriptstring.Append("window.location.href=window.location.href;");
                scriptstring.Append("</script>");
                string js = scriptstring.ToString();
                ClientScriptManager cs = Page.ClientScript;
                cs.RegisterStartupScript(GetType(), "scriptstring", js);