再<head></head>里面加上：
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="Cache-Control" content="no-cache,must-revalidate" />
<meta http-equiv="Expires" content="0" />
再cs页面加上：
Response.Expires = -1;
再<head></head>里面加上：
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="Cache-Control" content="no-cache,must-revalidate" />
<meta http-equiv="Expires" content="0" />
再cs页面加上：
Response.Expires = -1;